Build: Refine psa_arch_tests configuration

- Now command line options can be passed to SPE build.
- The TARGET and CPU_ARCH can be deduced from TF-M configs.
- Align with the new test config setup approach.
- Other improvements and fixes.

Change-Id: Ic29849526f75dc4395a5599374356342463b61db
Signed-off-by: Kevin Peng <kevin.peng@arm.com>
6 files changed