strip headers from list of src files in Android.bp

Change-Id: I1ebdd1fe9d5b8bc69e7fa6433ade4461c3ff8d08
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/607177
Auto-Submit: Jorge Betancourt <jmbetancourt@google.com>
Reviewed-by: Leon Scroggins <scroggo@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
1 file changed