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
diff --git a/tftf/tests/tests-smc.xml b/tftf/tests/tests-smc.xml
index b66c7a2..d63cfc3 100644
--- a/tftf/tests/tests-smc.xml
+++ b/tftf/tests/tests-smc.xml
@@ -20,6 +20,7 @@
      <testcase name="Unknown SMC" function="test_unknown_smc" />
      <testcase name="Query Standard Service" function="test_query_std_svc" />
      <testcase name="Query Vendor-Specific Service" function="test_query_ven_el3_svc" />
+     <testcase name="Probe PMF Version" function="test_check_pmf_version" />
   </testsuite>
 
 </testsuites>