qcacld-3.0: set LOCAL_MODULE_TAGS to optional variant

From Android Q onwards LOCAL_MODULE_TAGS set to debug
variant is deprecated, thus set LOCAL_MODULE_TAGS
to optional variant by removing LOCAL_MODULE_TAGS.
If a module doesn't specify a tag (by LOCAL_MODULE_TAGS),
its tag defaults to optional.

Change-Id: Iecadd3bf07a375e2cfb044b400330c490f2023b0
CRs-Fixed: 2452507

Android.mk

@@ -115,7 +115,6 @@ KBUILD_OPTIONS += $(WLAN_SELECT)
 include $(CLEAR_VARS)
 LOCAL_MODULE              := $(WLAN_CHIPSET)_$(LOCAL_DEV_NAME).ko
 LOCAL_MODULE_KBUILD_NAME  := $(LOCAL_MOD_NAME).ko
-LOCAL_MODULE_TAGS         := debug
 LOCAL_MODULE_DEBUG_ENABLE := true
 ifeq ($(PRODUCT_VENDOR_MOVE_ENABLED),true)
     ifeq ($(WIFI_DRIVER_INSTALL_TO_KERNEL_OUT),true)