Move C labels to start-of-line

Also mark the corresponding lint test stable.

Change-Id: Ib7c9ed88c5254bf56e68c01cdbd5ab91cd7bfc2f
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/772
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/console/vtxprintf.c

@@ -123,7 +123,7 @@ int vtxprintf(void (*tx_byte)(unsigned char byte), const char *fmt, va_list args
 
 		/* process flags */
 		flags = 0;
-		repeat:
+repeat:
 			++fmt;		/* this also skips first '%' */
 			switch (*fmt) {
 				case '-': flags |= LEFT; goto repeat;