* The coding format is too messy, reformat to improve readability
and get closer to Linux kernel coding style.
* While at it, update .clang-format file to linux-mainline state.
Then we don't have to do extern input_hook(...) ; input_hook(..) and
just include header file and use input_hook(...) only
Like
f39f4823a1
Not
0c491aca8a