[automerger skipped] [DO NOT MERGE] Add Goma deprecation PSA to soong. am:...

[automerger skipped] [DO NOT MERGE] Add Goma deprecation PSA to soong. am: ee50d5b5 am: db6b17e7 -s ours am: d6c260c4 -s ours

am skip reason: Change-Id Ie7e146285afd40bc0a1dc17a0b898960f57a118b with SHA-1 ee17f8c0 is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/build/soong/+/12614869

Change-Id: I3611a72a6d0e815c147a53f0c2d5aa0df0a4defc