clang-format: Update .clang-format to be compliant with linux kernel coding style

* The coreboot clang format file seems to be incomplete.
* Add missing options.

Change-Id: I61a32ed951d18d5865be201bb38d18e50dd76f08
Signed-off-by: Philipp Deppenwiese <zaolin@das-labor.org>
Reviewed-on: https://review.coreboot.org/25687
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
1 file changed