agent:daemon: Add an argument to specify requiring socket connection.
* agent/agent.h (daemon_start): Add REQ_SOCK argument. * agent/call-daemon.c (daemon_start): Support specifying a socket connection. * agent/call-scd.c (start_scd): Connection don't care. * agent/call-tpm2d.c (start_tpm2d): Likewise.
- GnuPG-bug-id: T7151
- Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>