Fix initial PSA Crypto API test failures

Before adding support for new crypto operations, this commit fixes
some PSA arch test failures when run against the Crypto trusted
service.  There are other test failures but these are either due
to missing functionaility or test case issues.

Signed-off-by: Julian Hall <julian.hall@arm.com>
Change-Id: I1cea59d4861c1ecbb804d5ceff69a8b7018ac62d
5 files changed