nb/intel/x4x: Fix issues found by checkpatch.pl

Change-Id: Ie22b8bd5420f8c33df1866410af42ef41ad38362
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/18694
Tested-by: build bot (Jenkins)
Reviewed-by: Nico Huber <nico.h@gmx.de>
10 files changed