soc/intel/common/block: Provide mmc.c for setting dll registers

Currently, we don't have UPDs to set emmc settings per mainboard on CML.

This code change is to create mmc.c to provide interface to override dll
settings per mainboard.

Notice: set_mmc_dll function will override the dll values in FSP.

BUG=b:131401116
BRANCH=none
TEST=Boot to OS and confirm the dll values have been overridden.

Change-Id: Ib3c72b9851f41585ec099d8ae83a721af87ed383
Signed-off-by: Kane Chen <kane.chen@intel.com>
Signed-off-by: Jamie Chen <jamie.chen@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35040
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>

0 files changed, 0 insertions, 0 deletions