EVP_PKEY & EC_KEY: Make EC EVP_PKEY_CTX parameter ctrls / setters more available

EVP_PKEY & EC_KEY: Make EC EVP_PKEY_CTX parameter ctrls / setters more available

EVP_PKEY_CTX_set_ec_ functions were only available when EC was enabled
('no-ec' not configured).  However, that makes it impossible to use
these functions with an engine or a provider that happens to implement
EC_KEY.  This change solves that problem by shuffling these functions
to more appropriate places.

Partially fixes #13550

squash! EVP_PKEY & EC_KEY: Make EC EVP_PKEY_CTX parameter ctrls / setters more available

By consequence, there are a number of places where we can remove the
check of OPENSSL_NO_EC.  This requires some re-arrangements of
internal tables to translate between numeric identities and names.

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/13589)