[M] Change in coreboot[master]: soc/intel/common: Add helper functions for SGX, Key Locker, and PRM

[Pratikkumar V Prajapati (Code Review)]

Hello Subrata Banik, Sridhar Siricilla,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/71569

to look at the new patch set (#9).

Change subject: soc/intel/common: Add helper functions for SGX, Key Locker, and PRM
......................................................................

soc/intel/common: Add helper functions for SGX, Key Locker, and PRM

Add below mentioned functions:

is_sgx_configured_and_supported():
    Checks if SGX is configured and supported
is_keylocker_configured_and_supported():
    Checks if Key Locker is configured and supported
check_prm_features_enabled():
    Checks if any of the features that need PRM are configured
    and supported. As of now SGX and Key Locker are the only
    features that need PRM.

Also, call check_prm_features_enabled() from get_valid_prmrr_size()
to make sure PRM dependent features are enabled and configured before
returning PRMRR size.

Signed-off-by: Pratikkumar Prajapati 
Change-Id: I51d3c144c410ce4c736f10e3759c7b7603ec3de9
---
M src/soc/intel/common/block/cpu/cpulib.c
1 file changed, 71 insertions(+), 22 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/69/71569/9