Miscellaneous SCMI v3.0 fixes

This merge-request include a bunch of small fixes around the ACS suite and one small enhancement (last patch) to allow the optional relaxing of the protocol version checks so that a few testcases can be run even when the SCMI server under test had advertised a newer protocol implementation than the one currently supported by the test-suite.

This could lead to false positives, so it is off by default and can be enabled (only for the linux app as of now) via a command-line option -r.

The series has been tested successfully on CI at: https://jenkins.oss.arm.com/job/scp-v2-cmake-tests-scmi/4815/

Thanks, Cristian