There are a few minor code issues that should be fixed in SST:
- Duplicated call to sst_crypto_set_iv in SST object table should be removed
- PSA iovec typenames should be psa_invec and psa_outvec in SST request manager
- SST mem utils should use the implementations provided by TF-M core instead of unoptimised versions
- Unused sst_utils_validate_secure_caller function should be removed