Documentation: inject the current git revision into the website

Change-Id: I79cceca7373f8bdf9bbfba5d84b8fa589afa838b
Signed-off-by: Patrick Georgi <patrick@georgi.software>
Reviewed-on: https://review.coreboot.org/26897
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
1 file changed