soc/intel/alderlake: Add PCH ID 0x5181

soc/intel/alderlake: Add PCH ID 0x5181

List of changes:
1. Add new PCH ID 0x5181 into device/pci_ids.h
2. Update new PCH ID into common lpc.c
3. Add new PCH ID description into report_platform.c

TEST=Able to build and boot ADLRVP with new PCH ID.

Change-Id: I4343b7343876eb40c2955f6f4dd99d6446852dc0
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47474
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>