ec/hp/kbc1126: Make firmware offsets user configurable
After C_ENVIRONMENT_BOOTBLOCK became mainstream, coreboot build system
starts to produce larger bootblock, conflicting with former default
offsets.
This change makes these offsets configurable before building, with
default values lower than before, to better fit the larger bootblock.
Change-Id: Ie022663a4d0df7f431865b55f7329a9ebb90863b
Signed-off-by: Bill XIE <persmule@hardenedlinux.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37778
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>