qcacld-3.0: Enable the Hangevent for mainline

Enable hang event for the mainline targets.

Change-Id: I7249c2d89d8c87cf000670bf053f82429857f190
CRs-Fixed: 2743829

configs/default_defconfig

@@ -1160,3 +1160,6 @@ CONFIG_WLAN_FEATURE_RX_BUFFER_POOL := y
 CONFIG_DP_RX_BUFFER_POOL_SIZE := 128
 CONFIG_DP_RX_BUFFER_POOL_ALLOC_THRES := 5
 endif
+
+#Enable Hang Event
+CONFIG_WLAN_HANG_EVENT := y