google/gale: use if (IS_ENABLED()) over #ifdef

Change-Id: I9047251608fbb92180f2e92d19fd128c5f1ef399
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: https://review.coreboot.org/14754
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
1 file changed