Use libnativewindow for platform variant of android_native_app_glue

The SDK variant of android_native_app_glue doesn't need
libnativewindow as that library didn't exist in the sdk version
it uses, but it is necessary for the platform variant.

Bug: 149591340
Test: m checkbuild
Change-Id: I1bae84c436fce0a4c204701cc463bb32c92becc9
1 file changed