cpu/intel/core2: Cache XIP romstage with C_ENVIRONMENT_BOOTBLOCK.

Tested on Thinkpad X200: the romstage execution speeds are back to
pre-C_ENVIRONMENT_BOOTBLOCK levels.

Change-Id: Id0b50d2f56e7cc0e055cdc8b9aa28794327eca28
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35994
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions