Merge "Fix strip_prefix flags to strip install paths." am: 20b623da

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/2120624



Change-Id: I07ecc609d4a5ce2fd4e5ed66e0bedc8d4f0be0be
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>