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
Merged-In: I041a57bc6873903895a0b8783eb13106ea224886
Change-Id: I041a57bc6873903895a0b8783eb13106ea224886
(cherry picked from commit 99b16d2f369fc2e7e9e9abbf3229f4716376e76c)
diff --git a/device.mk b/device.mk
index 2118f74..831fd4c 100644
--- a/device.mk
+++ b/device.mk
@@ -27,6 +27,7 @@
     hardware/qcom/sm8150/display \
     hardware/qcom/sm8150/data/ipacfg-mgr \
     hardware/qcom/sm8150/gps \
+    hardware/qcom/wlan/legacy \
     system/chre/host/hal_generic \
     vendor/google/airbrush/floral \
     vendor/google/biometrics/face/florence \