Driver-only hashes: TLS 1.2: `compat.sh`

[mpg]

This is a follow-up to #6128. After having TLS 1.2 build and test_suite_ssl pass in a build with driver-only hashes, we want the rest of the TLS 1.2 tests to pass; this task is about compat.sh.

• [ ] Add a run of compat.sh at the end of all.sh's component_test_psa_crypto_config_accel_hash_use_psa.
• [ ] Fix any failures that may arise.
• [ ] Ensure coverage parity. This could be done by comparing the output of the script from the all.sh component of interest with a similar build. (Note: compat.sh does not have any kind of dependency declarations, however it does mark tests as skipped when it detects that the ciphersuite is not supported by Mbed TLS, so there is a risk of things being incorrectly skipped. Also, it does not support outcome files so far, so the output from the script is the only thing we can use.)

**Depends on: #6128