soc/intel/alderlake/romstage: Drop ineffective FSP-M UPD `ChHashMask`
FSP-M UPD ChHashOverride is default disable hence ChHashMask doesn't
take any effect. Dropping ChHashMask assignment in coreboot.
TEST=Able to build and boot ADL-P LP4 RVP. FSP-M UPD dump showed both
UPDs are set to default value 0.
ChHashOverride: 0
ChHashMask: 0h
Change-Id: Ide1c9da27ca68fd36ff5b44910cfcedfcb12f232
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55272
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>