omni: add TARGET_USES_HARDWARE_QCOM_WLAN AOSP guard

To prevent include mk files into qcom/wlan repo.

But LOL, need to be false to bypass it ...
'set TARGET_USES_HARDWARE_QCOM_WLAN to false to disable this project'

Change-Id: I2ebfcb75b0338b2011b2af33a397867060ab2482
diff --git a/config/BoardConfigQcom.mk b/config/BoardConfigQcom.mk
index 28afb0d..ac30ff0 100644
--- a/config/BoardConfigQcom.mk
+++ b/config/BoardConfigQcom.mk
@@ -77,6 +77,9 @@
 # Gralloc Usage Bits
 TARGET_ADDITIONAL_GRALLOC_10_USAGE_BITS := (1 << 13) | (1 << 21) | (1 << 27)
 
+# Wlan AOSP guard
+TARGET_USES_HARDWARE_QCOM_WLAN := false
+
 # Wlan Qcom Guard
 PRODUCT_CFI_INCLUDE_PATHS += \
     hardware/qcom-caf/wlan/qcwcn/wpa_supplicant_8_lib