Merge "Support tailoring clang --target flag based on min sdk version." am:...

Merge "Support tailoring clang --target flag based on min sdk version." am: ba4638f5 am: 41b4e249

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/2011702

Change-Id: I5bb2e95bd00d6f98e74b5990253aaf437e2db25b