qcacmn: Refine the Link Layer Stats Unified API

There are multiple issues with the Link Layer Stats Unified API:
- struct ll_stats_clear_params and struct ll_stats_get_params both
  incorrectly use the identifier "sta_id" to refer to a vdev_id.
- struct ll_stats_set_params has an unused "sta_id" field.
- Functions wmi_unified_process_ll_stats_clear_cmd() and
  wmi_unified_process_ll_stats_get_cmd() pass the MAC address as a
  separate parameter rather than adhering to the commonly used
  unified signature: func(handle, param).
- Not all of the functions and data structures are correctly protected
  by the WLAN_FEATURE_LINK_LAYER_STATS feature flag.

Refine the Link Layer Stats Unified API to address these issues.

This is co-dependent with Ifd7c8de2358121dae4752525ff57021a32be85d3
("qcacld-3.0: Use the refined Link Layer Stats Unified API").

Change-Id: Ifdc1fada55a559f3b3d0837ec20cceb653c45c40
CRs-Fixed: 2409293

wmi/inc/wmi_unified_priv.h

@@ -660,21 +660,19 @@ QDF_STATUS (*send_ipa_offload_control_cmd)(wmi_unified_t wmi_handle,
 		struct ipa_uc_offload_control_params *ipa_offload);
 #endif
 
-QDF_STATUS (*send_process_ll_stats_clear_cmd)
-	   (wmi_unified_t wmi_handle,
-	   const struct ll_stats_clear_params *clear_req,
-	   uint8_t addr[IEEE80211_ADDR_LEN]);
+#ifdef WLAN_FEATURE_LINK_LAYER_STATS
+QDF_STATUS (*send_process_ll_stats_clear_cmd)(wmi_unified_t wmi_handle,
+				const struct ll_stats_clear_params *clear_req);
 
-QDF_STATUS (*send_process_ll_stats_set_cmd)
-	(wmi_unified_t wmi_handle, const struct ll_stats_set_params *set_req);
-
-QDF_STATUS (*send_process_ll_stats_get_cmd)
-	(wmi_unified_t wmi_handle, const struct ll_stats_get_params  *get_req,
-		 uint8_t addr[IEEE80211_ADDR_LEN]);
+QDF_STATUS (*send_process_ll_stats_set_cmd)(wmi_unified_t wmi_handle,
+				const struct ll_stats_set_params *set_req);
 
+QDF_STATUS (*send_process_ll_stats_get_cmd)(wmi_unified_t wmi_handle,
+				const struct ll_stats_get_params *get_req);
+#endif
 
 QDF_STATUS (*send_congestion_cmd)(wmi_unified_t wmi_handle,
-			uint8_t vdev_id);
+				  uint8_t vdev_id);
 
 QDF_STATUS (*send_snr_request_cmd)(wmi_unified_t wmi_handle);