* scd/app-openpgp.c (ecc_writekey): Use provided ECDH params to
compute the fingerprint.  Add a default for use by gnupg 2.2.
(store_fpr): Add arg update.
(rsa_read_pubkey, ecc_read_pubkey): Add arg meta_update and avoid
writing the fingerprint back to the card if not set.
(read_public_key): Also add arg meta_update.
(get_public_key): Do not pass it as true here...
(do_genkey): ... but here.