For the repo split, we plan to move all configuration options but the TLS and x509 ones from mbedtls_config.h to crypto_config.h that will become the TF-PSA-Crypto configuration file and probably be renamed tf_psa_crypto_config.h.

To handle tf_psa_crypto_config.h, we need a config.py script similar to what is config.py for mbedtls_config.h currently.
Options: same as config.py but no crypto, crypto_baremetal and crypto_full adapters.
Pre-requisite: Define the sections and possible macro prefixes.