payloads/coreinfo/multiboot_module.c: Trivial fix indents

Stylistic fix-up's.

Change-Id: I0cad7c860280d0d8dcb16d052846c72f690e2b65
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/5731
Tested-by: build bot (Jenkins)
Reviewed-by: Idwer Vollering <vidwer@gmail.com>