sub layer cut package in allowed size, so it's not mandatory to do this
at openFPGALoader level. The only situation when the size is important
is in read mode. So increase buffer size to reduce system calls.
- jtagInterface as now only two method: one for tms or for tdi, in all
case full buffer is provided and specific code deal with them to write
- jtag: drop read_write logic to jtag probe abstraction
Gwenhael Goavec-Merou
Martin Pittermann