qcacld-3.0: Add build configuration for the wmi hang event

wmi hang event configuration has been added, enable
the build configration for the feature.

Change-Id: I8c7034d07f369f79191a2496e9000f83eecdba6e
CRs-Fixed: 2651741

Kbuild

@@ -1366,6 +1366,10 @@ WMI_OBJS += $(WMI_OBJ_DIR)/wmi_unified_fwol_api.o
 WMI_OBJS += $(WMI_OBJ_DIR)/wmi_unified_fwol_tlv.o
 endif
 
+ifeq ($(CONFIG_WLAN_HANG_EVENT), y)
+WMI_OBJS += $(WMI_OBJ_DIR)/wmi_hang_event.o
+endif
+
 ########### FWLOG ###########
 FWLOG_DIR := $(WLAN_COMMON_ROOT)/utils/fwlog