allow 0x34 as ICCRIBA for CHIPSET_C620_SERIES_LEWISBURG

Intel C621A Lewisburg PCH belongs to C620 series, it has 0x34 as ICCRIBA.

Fix guess_ich_chipset_from_content() accordingly.

Print status info of read_ich_descriptors_from_dump() to facilitate
debugging upon failure.

TESTED=run flashrom successfully from OCP Yosemite V3 DeltaLake server.

Change-Id: I363aaccfb90e0a127c0f0bb0072e9e85c210b669
Signed-off-by: Jonathan Zhang <jonzhang@fb.com>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/44621
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
1 file changed