onmi: Add qcom-caf wlan to soong namespaces

Change-Id: I6b67b7932e27a7f1fbbb623e3e5b9e2103684c8c
diff --git a/config/BoardConfigQcom.mk b/config/BoardConfigQcom.mk
index e2d8a09..eec7f6f 100644
--- a/config/BoardConfigQcom.mk
+++ b/config/BoardConfigQcom.mk
@@ -91,3 +91,5 @@
 # Wlan Qcom Guard
 PRODUCT_CFI_INCLUDE_PATHS += \
     hardware/qcom-caf/wlan/qcwcn/wpa_supplicant_8_lib
+
+PRODUCT_SOONG_NAMESPACES += hardware/qcom-caf/wlan