feat(smc): add test for pmf version check

PMF is moved under vendor specific EL3 range, part of this
we have introduced each sub-service have an version scheme[1].

Add a simple test to check if the sub-service version
is probed.

[1]:
https://trustedfirmware-a.readthedocs.io/en/latest/components/ven-el3-service.html

Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>
Change-Id: I885cd1378a8025371172e5cd82fdd111d6832619
3 files changed