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/devices/oprom/yabel/pmm.c

@@ -267,7 +267,7 @@ void pmm_handleInt()
 		rval = 0xFFFFFFFF;
 		goto exit;
 	}
-      exit:
+exit:
 	/* exit handler of this function, restore registers, put return value in DX:AX */
 	M.x86 = backup_regs;
 	M.x86.R_DX = (u16) ((rval >> 16) & 0xFFFF);