Merge "Enable clang-format for input-related code"

[Builtin Hooks Options]

# Only turn on clang-format check for the following subfolders.

clang_format = --commit ${PREUPLOAD_COMMIT} --style file --extensions c,h,cc,cpp

               include/input/

               libs/binder/ndk/

               libs/graphicsenv/

               libs/gui/

               libs/input/

               libs/renderengine/

               libs/ui/

               libs/vr/

               services/bufferhub/

               services/inputflinger/

               services/surfaceflinger/

               services/vr/