northbridge,Makefile.inc: Trivial - drop trailing blank lines at EOF

Change-Id: Id1fcd3d1cd8a156a76e1a9a3ca4c7b4004c2c015
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/6289
Tested-by: build bot (Jenkins)
Reviewed-by: Idwer Vollering <vidwer@gmail.com>
12 files changed