qcacmn: Realloc memory for wmi_service_ext_bitmap

Realloc memory for wmi_service_ext_bitmap when
WMI_SERVICE_AVAILABLE_EVENTID event come, and
the num of wmi_service_ext_bitmap large then
previous num.

Change-Id: I2800fe3274e5516369486ef065ce03ba121bd5b3
CRs-Fixed: 3346739

wmi/inc/wmi_unified_priv.h

@@ -3349,6 +3349,7 @@ struct wmi_soc {
 	/* WMI service bitmap received from target */
 	uint32_t *wmi_service_bitmap;
 	uint32_t *wmi_ext_service_bitmap;
+	uint32_t wmi_ext2_service_bitmap_len;
 	uint32_t *wmi_ext2_service_bitmap;
 	uint32_t services[wmi_services_max];
 	uint16_t wmi_max_cmds;

wmi/src/wmi_unified_tlv.c

@@ -12219,12 +12219,21 @@ QDF_STATUS save_ext_service_bitmap_tlv(wmi_unified_t wmi_handle, void *evt_buf,
 		return QDF_STATUS_SUCCESS;
 	}
 
-	if (!soc->wmi_ext2_service_bitmap) {
+	if (!soc->wmi_ext2_service_bitmap ||
+	    (param_buf->num_wmi_service_ext_bitmap >
+	     soc->wmi_ext2_service_bitmap_len)) {
+		if (soc->wmi_ext2_service_bitmap) {
+			qdf_mem_free(soc->wmi_ext2_service_bitmap);
+			soc->wmi_ext2_service_bitmap = NULL;
+		}
 		soc->wmi_ext2_service_bitmap =
 			qdf_mem_malloc(param_buf->num_wmi_service_ext_bitmap *
 				       sizeof(uint32_t));
 		if (!soc->wmi_ext2_service_bitmap)
 			return QDF_STATUS_E_NOMEM;
+
+		soc->wmi_ext2_service_bitmap_len =
+			param_buf->num_wmi_service_ext_bitmap;
 	}
 
 	qdf_mem_copy(soc->wmi_ext2_service_bitmap,