qcacmn: add API to do IPA Tx buf smmu_unmapping for Hastings

Add API to do IPA Tx buf SMMU-S1 unmapping and register it
with cdp ops for Hastings, also assert if map/unmap failed.

Change-Id: I4071b5fccd84c3c97b9dccc40c6f798d70993189
CRs-Fixed: 2792170

dp/wifi3.0/dp_ipa.h

@@ -250,16 +250,27 @@ bool dp_ipa_is_mdm_platform(void);
 qdf_nbuf_t dp_ipa_handle_rx_reo_reinject(struct dp_soc *soc, qdf_nbuf_t nbuf);
 
 /**
- * dp_ipa_tx_buf_smmu_mapping() Create SMMU mappings for IPA
- * allocated TX buffers
- * @soc_hdl - handle to the soc
- * @pdev_id - pdev id number, to get the handle
+ * dp_ipa_tx_buf_smmu_mapping() - Create SMMU mappings for IPA
+ *				  allocated TX buffers
+ * @soc_hdl: handle to the soc
+ * @pdev_id: pdev id number, to get the handle
  *
  * Return: QDF_STATUS
  */
 QDF_STATUS dp_ipa_tx_buf_smmu_mapping(
 	struct cdp_soc_t *soc_hdl, uint8_t pdev_id);
 
+/**
+ * dp_ipa_tx_buf_smmu_unmapping() - Release SMMU mappings for IPA
+ *				    allocated TX buffers
+ * @soc_hdl: handle to the soc
+ * @pdev_id: pdev id number, to get the handle
+ *
+ * Return: QDF_STATUS
+ */
+QDF_STATUS dp_ipa_tx_buf_smmu_unmapping(
+	struct cdp_soc_t *soc_hdl, uint8_t pdev_id);
+
 #else
 static inline int dp_ipa_uc_detach(struct dp_soc *soc, struct dp_pdev *pdev)
 {
@@ -291,8 +302,14 @@ static inline qdf_nbuf_t dp_ipa_handle_rx_reo_reinject(struct dp_soc *soc,
 	return nbuf;
 }
 
-static inline QDF_STATUS dp_ipa_tx_buf_smmu_mapping(
-	struct cdp_soc_t *soc_hdl, uint8_t pdev_id)
+static inline QDF_STATUS dp_ipa_tx_buf_smmu_mapping(struct cdp_soc_t *soc_hdl,
+						    uint8_t pdev_id)
+{
+	return QDF_STATUS_SUCCESS;
+}
+
+static inline QDF_STATUS dp_ipa_tx_buf_smmu_unmapping(struct cdp_soc_t *soc_hdl,
+						      uint8_t pdev_id)
 {
 	return QDF_STATUS_SUCCESS;
 }