Add Gemini Lake support

The SPI hardware is pretty much unchanged from Apollo Lake. However, the
IFD differs significantly enough to require special handling.

Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Change-Id: Ib5dcdf204166f44a8531c19b5f363b851d2ccd77
Reviewed-on: https://review.coreboot.org/c/flashrom/+/54276
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
6 files changed