scmi_clock/test: Add tests of invalid cases to clock rate set UT
requested to merge github/fork/mohamedasaker-arm/ut/scmi_clock/add-tests-for-rate-set-invalid-cases into master
Created by: mohamedasaker-arm
Increase test coverage by adding tests for invalid cases
- test passing invalid message id to scmi_clock_message_handler expected response SCMI_NOT_FOUND
- test passing incorrect payload size to scmi_clock_message_handler expected response SCMI_PROTOCOL_ERROR