scd: pinpad workaround for PC/SC implementations.
* scd/adpu.c (pcsc_pinpad_verify, pcsc_pinpad_modify): Bigger buffer for TPDU card reader.
(backport from 2.1 commit 5e1d2fe6555d06f9dcd2daac713b2edfbc0428a5)
This is needed for PC/SC on Debian Jessie. Note that it's not only
for Cherry ST-2000, but also, for any TPDU card readers.