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
Original-Reviewed-on: https://review.coreboot.org/c/flashrom/+/54276
Original-Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
Reviewed-on: https://review.coreboot.org/c/flashrom-stable/+/71354
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/programmer.h b/programmer.h
index 8b1de53..1a7b720 100644
--- a/programmer.h
+++ b/programmer.h
@@ -645,6 +645,7 @@
 	CHIPSET_C620_SERIES_LEWISBURG,
 	CHIPSET_300_SERIES_CANNON_POINT,
 	CHIPSET_APOLLO_LAKE,
+	CHIPSET_GEMINI_LAKE,
 };
 
 /* ichspi.c */