* agent/agent.h (divert_tpm2_pksign, divert_tpm2_pkdecrypt): Fix API.
(divert_pksign, divert_pkdecrypt): Likewise.
* agent/divert-scd.c (ask_for_card): Remove.
(divert_pksign, divert_pkdecrypt): Don't call ask_for_card.
* agent/divert-tpm2.c (divert_tpm2_pksign, divert_tpm2_pkdecrypt):
Remove DESC_TEXT argument.
* agent/findkey.c (prompt_for_card): New (was: ask_for_card).
(agent_key_from_file): Call prompt_for_card when it's a key
on card.
* agent/pkdecrypt.c (agent_pkdecrypt): Follow the change of API.
* agent/pksign.c (agent_pksign_do): Likewise.