superiotool: Add support for HWM registers on W83627EHG

Based on datasheet: "W83627EHF/EF W83627EHG/EG WINBOND LPC I/O,
Revision : 1.0"

Change-Id: Ia2e5ab8bc454a34a89fe2cf06bfba55261109785
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/17457
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
1 file changed