intel/common/firmware: Add common GBE rom support

Add support to the Intel common firmware Kconfig and Makefile.inc to
allow the Gigabit Ethernet (GBE) blob to be added to the final
binary.

Change-Id: Id5fab3061874dad759750b67d3339eb8c99a62d6
Signed-off-by: Martin Roth <gaumless@gmail.com>
Reviewed-on: http://review.coreboot.org/10875
Tested-by: build bot (Jenkins)
Reviewed-by: Alexander Couzens <lynxis@fe80.eu>
2 files changed