Enable apps to build with resource namespaces

Setting LOCAL_AAPT_NAMESPACES := true enables
namespaces for an app and requires any library resources
to be fully qualified by their package.

Test: manual
Bug: 73885582
Change-Id: Ia6bfc82ee8b8d6335f8e7c2abe94ce36467a012d
Merged-In: Ia6bfc82ee8b8d6335f8e7c2abe94ce36467a012d
diff --git a/core/clear_vars.mk b/core/clear_vars.mk
index fc6b83c..1022693 100644
--- a/core/clear_vars.mk
+++ b/core/clear_vars.mk
@@ -7,6 +7,7 @@
 LOCAL_AAPT2_ONLY:=
 LOCAL_AAPT_FLAGS:=
 LOCAL_AAPT_INCLUDE_ALL_RESOURCES:=
+LOCAL_AAPT_NAMESPACES:=
 LOCAL_ADDITIONAL_CERTIFICATES:=
 LOCAL_ADDITIONAL_DEPENDENCIES:=
 LOCAL_ADDITIONAL_HTML_DIR:=