scd:p15: Emit MANUFACTURER, $ENCRKEYID, $SIGNKEYID.
* scd/app-p15.c (read_ef_tokeninfo): Store manufacturer_id. (do_getattr): Implement MANUFACTURER, $ENCRKEYID and $SIGNKEYID. (send_keypairinfo): Also print usage flags.
- Signed-off-by: Werner Koch <wk@gnupg.org>