Add hardware/qcom/wlan namespace
With libwifi-hal-qcom migrated to Android.bp with soong namespace
the namespace should be added to PRODUCT_SOONG_NAMESPACES as well.
Bug: 273376293
Test: m droid
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:9d25d84fcc5b1bfdd53a064ac5b52e742c3f354c)
Merged-In: I6fe0e5ce62982493c9ef58b1ce651f6b44d37a1b
Change-Id: I6fe0e5ce62982493c9ef58b1ce651f6b44d37a1b