flashrom: Regress register_chip_restore function

After flashing bios.bin, the SW WP range will be cleared when SW WP
enabled and HW WP diabled.
Regressing register_chip_restore function can fix this issue.

BUG=b:131379085
TEST=emerge-sarien flashrom
cros deploy <DUT IP> flashrom
flashrom -p host --wp-range 0x1c00000 0x400000 --wp-enable
flashrom -p host -w image-sarien.bin
flashrom -p host --wp-status

Change-Id: Ia868e1a6982972eada353b3474e4241a32429e08
Signed-off-by: Chris Zhou <chris_zhou@compal.corp-partner.google.com>
Reviewed-on: https://chromium-review.googlesource.com/1592982
Commit-Ready: Duncan Laurie <dlaurie@google.com>
Reviewed-by: Duncan Laurie <dlaurie@google.com>
Reviewed-by: Furquan Shaikh <furquan@chromium.org>
2 files changed