mb/intel/d510mo/Kconfig: Don't override CBFS_SIZE

There is no need to override CBFS_SIZE since there is no additional
firmware needed on the flash.

Also due to it having a description CBFS_SIZE was displayed twice in
menuconfig, which is fixed by this.

Change-Id: I1a8e2e458ac4d420f3fd4628c2805b6d4e2ee529
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/19331
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
1 file changed