google/reef: Update EMMC DLL settings

Update EMMC DLL setting for reef board, after that system can
boot up into EMMC successfully.

BUG=chrome-os-partner:54228
TEST=Boot up into EMMC and check with Rootdev

Change-Id: I614cd624dce9069c5565599a955f87906bcea53b
Signed-off-by: Zhao, Lijian <lijian.zhao@intel.com>
Reviewed-on: https://review.coreboot.org/15156
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>
1 file changed