Uniquify generated source filenames am: 185460b997 am: efeff42250 am: ed5af8bd00 am: fc164bae43 am: 15117f7170

Original change: https://android-review.googlesource.com/c/platform/external/wayland/+/2464373

Change-Id: I090012cf35fd2f230d5ab9e6df06b863bb4628fa
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>