Merge "[cc] Remove deprecated clang flag for auto-var-init" am: 7e80f945 am: 24d32ca3

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/2585150



Change-Id: Ic122058493730248534a825c75db96ca2bcd9af6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>