qcacmn: Add extract API for dcs interference event

Add TLV APIs to extract DCS intereference event. Add pdev id in
extract API used to derive pdev object.

Change-Id: Ie42ec1e3aec899ddc5b6b13d37dfd468ee29df7c
CRs-Fixed: 1115213

wmi_unified_param.h

@@ -7225,4 +7225,14 @@ struct wmi_host_pdev_utf_event {
 	uint16_t datalen;
 };
 
+/**
+ * @struct wmi_host_dcs_interference_param
+ * @interference_type: Type of DCS Interference
+ * @uint32_t pdev_id: pdev id
+ */
+struct wmi_host_dcs_interference_param {
+	uint32_t interference_type;
+	uint32_t pdev_id;
+};
+
 #endif /* _WMI_UNIFIED_PARAM_H_ */