soc/intel/baytrail: Fix Kconfig for mrc.bin inclusion

It used the sandybridge systemagent binary and mentioned that in the
help text which is simply wrong and won't work.

This copies the nb/intel/haswell/Kconfig to not include an mrc.bin by
default.

Change-Id: I2e151a66abc6dab710abdbb92c0c28884d88912e
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/27140
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
1 file changed