scd: Fix pinpad handling when KDF enabled.
* scd/app-openpgp.c (do_getattr): Send the KDF DO information.
(cherry picked from commit 11da441016222337284c519ff56aca34e3042373)
- Fixes-commit: 95c7498b76231d3297541172d878f6a26702539b
- Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>