nb/intel/x4x: Add support for second PEG slot

Is only present on the P45 subtype of chipset.

Change-Id: I6b138db6654c83c40b5ca4b65d6ccd51ad4277fa
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/18516
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
1 file changed