feat(arm): use provided algs for (swd/p)rotpk

No longer hard code SHA-256 hashed  rsa dev keys,
now the keys can use pair of key alg: rsa, p256, p384
and hash alg: sha256, sha384, sha512.

All public keys are now generated at build-time from the dev
keys.

Change-Id: I669438b7d1cd319962c4a135bb0e204e44d7447e
Signed-off-by: Ryan Everett <ryan.everett@arm.com>
11 files changed