checkpatch: colorize output to terminal
checkpatch: colorize output to terminal

Add optional colors to make seeing message types a bit easier.

Add --color command line switch, default:on

Error is RED, warning is YELLOW, check is GREEN.  The message type, if
shown, is BLUE.

Signed-off-by: Joe Perches <16a9a54ddf4259952e3c118c763138e83693d7fd@perches.com>
Tested-by: Petr Mladek <9cbcfb1260d253e26a699647bd9cbee55818ea4a@suse.cz>
Cc: Andy Whitcroft <b4658fdd7fbd645c2859b0e39d71018f32058d12@canonical.com>
Signed-off-by: Andrew Morton <5c1e68b099950c134891f0b6e179498a8ebe9cf9@linux-foundation.org>
Signed-off-by: Linus Torvalds <69652caca27c8b940640ad396ab71f93cacec34f@linux-foundation.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs