soc/intel/common/block: add VMX support

Enable VMX if supported by CPU and enabled in board devicetree.
Check lock bit unset before enabling VMX.

Change-Id: Ic57eac45e9c65baa4479735c6d70a7eb685f080e
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/25331
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
5 files changed