cpu/intel/socket_mPGA478MN: Add socket P

This mobile CPU socket supports model_6fx and model_1067x.

Change-Id: Iecd6aae22831de7c3810545f0cb0be9738f96a2d
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/17154
Reviewed-by: Martin Roth <martinroth@google.com>
Tested-by: build bot (Jenkins)
4 files changed