qcacmn: Properly declare nbuf smmu map unmap

With NBUF_MEMORY_DEBUG=n and IPA_OFFLOAD=y, below errors are seen.

qdf/linux/src/qdf_nbuf.c:943:12: error: no previous prototype for function
'qdf_nbuf_smmu_map_debug' [-Werror,-Wmissing-prototypes]

qdf/linux/src/qdf_nbuf.c:955:12: error: no previous prototype for function
'qdf_nbuf_smmu_unmap_debug' [-Werror,-Wmissing-prototypes]

Currently above two APIs are only declared with NBUF_MEMORY_DEBUG=y.
Checking their definitions, could see that they have two variants
with NBUF_SMMU_MAP_UNMAP_DEBUG=y|n and they should only be valid
with IPA_OFFLOAD=y since IPA API is referenced in them.

Hence properly declare qdf_nbuf_smmu_map_debug() and
qdf_nbuf_smmu_unmap_debug() so that they're only valid with
IPA_OFFLOAD=y. With that, two variants are still kept.
With NBUF_SMMU_MAP_UNMAP_DEBUG=y, smmu map and unmap operations
are tracked. With NBUF_SMMU_MAP_UNMAP_DEBUG=n, no trackings are
maintained.

Change-Id: I83b08b1152d98b3efed3e52e564af0ebfbe5a7f7
CRs-Fixed: 3348594

qdf/inc/qdf_nbuf.h

@@ -1981,6 +1981,45 @@ static inline qdf_nbuf_t qdf_nbuf_next(qdf_nbuf_t buf)
 	return __qdf_nbuf_next(buf);
 }
 
+#ifdef IPA_OFFLOAD
+/**
+ * qdf_nbuf_smmu_map_debug() - map smmu buffer
+ * @nbuf: network buffer
+ * @hdl: ipa handle
+ * @num_buffers: number of buffers
+ * @info: memory info
+ * @func: function name
+ * @line: line number
+ *
+ * Return: QDF_STATUS
+ */
+QDF_STATUS qdf_nbuf_smmu_map_debug(qdf_nbuf_t nbuf,
+				   uint8_t hdl,
+				   uint8_t num_buffers,
+				   qdf_mem_info_t *info,
+				   const char *func,
+				   uint32_t line);
+
+/**
+ * qdf_nbuf_smmu_unmap_debug() - unmap smmu buffer
+ * @nbuf: network buffer
+ * @hdl: ipa handle
+ * @num_buffers: number of buffers
+ * @info: memory info
+ * @func: function name
+ * @line: line number
+ *
+ * Return: QDF_STATUS
+ */
+QDF_STATUS qdf_nbuf_smmu_unmap_debug(qdf_nbuf_t nbuf,
+				     uint8_t hdl,
+				     uint8_t num_buffers,
+				     qdf_mem_info_t *info,
+				     const char *func,
+				     uint32_t line);
+
+#endif /* IPA_OFFLOAD */
+
 #ifdef NBUF_MEMORY_DEBUG
 
 #define QDF_NET_BUF_TRACK_MAX_SIZE    (1024)
@@ -2027,42 +2066,6 @@ void qdf_net_buf_debug_update_map_node(qdf_nbuf_t net_buf,
 				       const char *func_name,
 				       uint32_t line_num);
 
-/**
- * qdf_nbuf_smmu_map_debug() - map smmu buffer
- * @nbuf: network buffer
- * @hdl: ipa handle
- * @num_buffers: number of buffers
- * @info: memory info
- * @func: function name
- * @line: line number
- *
- * Return: QDF_STATUS
- */
-QDF_STATUS qdf_nbuf_smmu_map_debug(qdf_nbuf_t nbuf,
-				   uint8_t hdl,
-				   uint8_t num_buffers,
-				   qdf_mem_info_t *info,
-				   const char *func,
-				   uint32_t line);
-
-/**
- * qdf_nbuf_smmu_unmap_debug() - unmap smmu buffer
- * @nbuf: network buffer
- * @hdl: ipa handle
- * @num_buffers: number of buffers
- * @info: memory info
- * @func: function name
- * @line: line number
- *
- * Return: QDF_STATUS
- */
-QDF_STATUS qdf_nbuf_smmu_unmap_debug(qdf_nbuf_t nbuf,
-				     uint8_t hdl,
-				     uint8_t num_buffers,
-				     qdf_mem_info_t *info,
-				     const char *func,
-				     uint32_t line);
-
 #ifdef NBUF_SMMU_MAP_UNMAP_DEBUG
 /**
  * qdf_nbuf_map_check_for_smmu_leaks() - check for nbuf smmu map leaks
@@ -2106,7 +2109,7 @@ void qdf_net_buf_debug_update_smmu_unmap_node(qdf_nbuf_t nbuf,
 					      unsigned long pa,
 					      const char *func,
 					      uint32_t line);
-#endif
+#endif /* NBUF_SMMU_MAP_UNMAP_DEBUG */
 
 /**
  * qdf_net_buf_debug_update_unmap_node() - update nbuf in debug

qdf/linux/src/qdf_nbuf.c

@@ -860,6 +860,7 @@ void qdf_nbuf_map_check_for_smmu_leaks(void)
 	qdf_tracker_check_for_leaks(&qdf_nbuf_smmu_map_tracker);
 }
 
+#ifdef IPA_OFFLOAD
 QDF_STATUS qdf_nbuf_smmu_map_debug(qdf_nbuf_t nbuf,
 				   uint8_t hdl,
 				   uint8_t num_buffers,
@@ -906,6 +907,7 @@ QDF_STATUS qdf_nbuf_smmu_unmap_debug(qdf_nbuf_t nbuf,
 }
 
 qdf_export_symbol(qdf_nbuf_smmu_unmap_debug);
+#endif /* IPA_OFFLOAD */
 
 static void qdf_nbuf_panic_on_free_if_smmu_mapped(qdf_nbuf_t nbuf,
 						  const char *func,
@@ -934,7 +936,7 @@ static inline void qdf_net_buf_update_smmu_params(QDF_NBUF_TRACK *p_node)
 	p_node->smmu_map_iova_addr = 0;
 	p_node->smmu_map_pa_addr = 0;
 }
-#else
+#else /* !NBUF_SMMU_MAP_UNMAP_DEBUG */
 #ifdef NBUF_MEMORY_DEBUG
 static void qdf_nbuf_smmu_map_tracking_init(void)
 {
@@ -953,7 +955,7 @@ static void qdf_nbuf_panic_on_free_if_smmu_mapped(qdf_nbuf_t nbuf,
 static inline void qdf_net_buf_update_smmu_params(QDF_NBUF_TRACK *p_node)
 {
 }
-#endif
+#endif /* NBUF_MEMORY_DEBUG */
 
 #ifdef IPA_OFFLOAD
 QDF_STATUS qdf_nbuf_smmu_map_debug(qdf_nbuf_t nbuf,
@@ -979,8 +981,8 @@ QDF_STATUS qdf_nbuf_smmu_unmap_debug(qdf_nbuf_t nbuf,
 }
 
 qdf_export_symbol(qdf_nbuf_smmu_unmap_debug);
-#endif
+#endif /* IPA_OFFLOAD */
-#endif
+#endif /* NBUF_SMMU_MAP_UNMAP_DEBUG */
 
 #ifdef NBUF_MAP_UNMAP_DEBUG
 #define qdf_nbuf_map_tracker_bits 11 /* 2048 buckets */