qcacmn: Get CCA from firmware

Requirement is to get CCA from frmware when connection fails due to
assoc/auth/probe response timeout. These are common changes to get
CCA from firmware.

Change-Id: I062343ed065d7b0c38b9e3b24ecfa9851b9b1537
CRs-Fixed: 2031843

wmi_unified_api.h

@@ -675,6 +675,16 @@ QDF_STATUS wmi_unified_get_stats_cmd(void *wmi_hdl,
 		       struct pe_stats_req  *get_stats_param,
 			   uint8_t addr[IEEE80211_ADDR_LEN]);
 
+/**
+ * wmi_unified_congestion_request_cmd() - send request to fw to get CCA
+ * @wmi_hdl: wma handle
+ * @vdev_id: vdev id
+ *
+ * Return: QDF_STATUS_SUCCESS on success and QDF_STATUS_E_FAILURE for failure
+ */
+QDF_STATUS wmi_unified_congestion_request_cmd(void *wmi_hdl,
+		uint8_t vdev_id);
+
 QDF_STATUS wmi_unified_snr_request_cmd(void *wmi_hdl);
 
 QDF_STATUS wmi_unified_snr_cmd(void *wmi_hdl, uint8_t vdev_id);

wmi_unified_priv.h

@@ -477,6 +477,9 @@ QDF_STATUS (*send_get_stats_cmd)(wmi_unified_t wmi_handle,
 		       struct pe_stats_req  *get_stats_param,
 			   uint8_t addr[IEEE80211_ADDR_LEN]);
 
+QDF_STATUS (*send_congestion_cmd)(wmi_unified_t wmi_handle,
+			A_UINT8 vdev_id);
+
 QDF_STATUS (*send_snr_request_cmd)(wmi_unified_t wmi_handle);
 
 QDF_STATUS (*send_snr_cmd)(wmi_unified_t wmi_handle, uint8_t vdev_id);