Makefile.inc: Fix make gitconfig for blobs repo

It's `.git/modules/3rdparty/blobs` now.

Change-Id: Ief12bb934332375a20f150afb568aef266924c9f
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/16946
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Alexander Couzens <lynxis@fe80.eu>
1 file changed