gpg: Display the correct OpenPGP algo name at 3 places.

* g10/card-util.c (do_change_keyattr): Replace gcry_pk_algo_name by
openpgp_pk_algo_name.
* g10/keyedit.c (show_key_with_all_names): Ditto.

For RSA and and DSA the Libgcrypt and the OpenPGP identifiers are the
same. But for ECC they are different and thus we need to use the
respective function to avoid printing a ? for example EdDSA designated
revocation keys.

Updates-commit: b7f8dec6325f1c80640f878ed3080bbc194fbc78