This patch implements a SoC overrides to check CPU privilege level
as the MSR is not consistent across platforms.
For example: On APL/GLK/DNV, it's MSR 0x120 and CNL onwards it's MSR
0x151.
BUG=b:211573253, b:211950520
Signed-off-by: Subrata Banik <subratabanik@google.com>
Change-Id: I515f0a3548bc5d6250e30f963d46f28f3c1b90b3
Reviewed-on: https://review.coreboot.org/c/coreboot/+/60900
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>