make change-mcp55-mac.pl executable

Change-Id: I32928cbdb16f970b43d2cf5dfe04d21fe9cf423c
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@no-log.org>
Reviewed-on: https://review.coreboot.org/18530
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
1 file changed