qcacld-3.0: Start vendor ACS timer after the vendor event is sent

Driver starts a vendor ACS timer which times out if vendor app doesn't
respond with commands within stipulated time. But in do_acs this timer
is started before all the channel list parsing, regulatory checks and
buffer allocation code. In some cases this takes up enough time to
expire the timer before sending the vendor event. Similar situation will
arise if a buffer allocation fails in between.
To avoid this start timer after the vendor event is sent.

Change-Id: If9bea4643e03f0541ac8d8af2183c1e8d3a6cc40
CRs-Fixed: 2096246

core/hdd/src/wlan_hdd_main.c

@@ -7261,10 +7261,10 @@ int hdd_update_acs_timer_reason(hdd_adapter_t *adapter, uint8_t reason)
 	timer_context = (struct hdd_external_acs_timer_context *)
 			adapter->sessionCtx.ap.vendor_acs_timer.user_data;
 	timer_context->reason = reason;
-	qdf_mc_timer_start(&adapter->sessionCtx.ap.vendor_acs_timer,
-				WLAN_VENDOR_ACS_WAIT_TIME);
-	/* Update config to application */
+	/* Update config to application and start the timer */
 	hdd_cfg80211_update_acs_config(adapter, reason);
+	qdf_mc_timer_start(&adapter->sessionCtx.ap.vendor_acs_timer,
+		WLAN_VENDOR_ACS_WAIT_TIME);
 	hdd_notice("Updated ACS config to nl with reason %d", reason);
 
 	return 0;