test(tc): test for AP/RSS interface for ROTPK

Adding new test for AP/RSS interface for reading ROTPK for
each 3 types of ROTPKs for: CCA, secure, and non-secure firmware.

Enabled by PLATFORM_TEST=rss-rotpk.

Update to print output when AP/RSS interface platform tests
pass to be able to reuse expect script functionality in CI.

Change-Id: Icc50b090e18a272378751fda104d209738b5b70c
Signed-off-by: Lauren Wehrmeister <lauren.wehrmeister@arm.com>
5 files changed