Auto generate prebuilt libs for vndk snapshot v28

For VNDK v28, auto generate the prebuilt_library modules of
libprotobuf-cpp-* that are required for the vendor compatibility to
build the vendor modules that are still using the old version of
libprotobuf-cpp libraries.

Bug: 142220143
Test: python3 development/vndk/snapshot/update.py \
      --local {snapshot_dir} --use-current-branch -vv 28
Change-Id: I28be3bcca31ebd078b59684eeb762809c15a7f99
1 file changed