#354 ftdi buffer too small

[Peter F. Patel-Schneider]

lirc puts all the values for a command into a single buffer of size 65536 bytes. This is too small for many device commands. Doubling the size of the buffer seems to be a reasonable change.

[David Röthlisberger]

We've been using this patch for years:
https://github.com/stb-tester/lirc/commit/f9493fed34cc6d2de91921bfd650997552340ff4