Suggested enhancement

The benchmark program no longer covers FFDH or ECDH, since the legacy APIs (dhm.g, ecdh.h) have been removed entirely. This task is to re-introduce benchmarking of those primitives in programs/test/benchmark.c.

Since they both use the same PSA Crypto API, only with different key types and algs, we might want to introduce a common helper function. However we still want two separate command-line arguments. Each of them (ECDH, FFDH) will have a table with the list of parameters (curves) to test.

Justification

TF-PSA-Crypto needs this because we want the benchmark program to cover all the primitives we offer.