flashchips: Add missing block erasers for GD25Q256D

Change-Id: I7e49e468c7f1eaf0ddd5fc08d6cc6569274faf94
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/35798
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
1 file changed