Address most of the checkpatch issues we found in km_arm and common km code. CC: Stefan Roese <sr@denx.de> CC: Valentin Longchamp <valentin.longchamp@hitachi-powergrids.com> Signed-off-by: Holger Brunck <holger.brunck@hitachi-powergrids.com> Reviewed-by: Stefan Roese <sr@denx.de>