Make wireshark happy.

Removing the P Bit from the fake LAPD frame will make wireshark
run the data through the GSM RSL dissector with the right SAPI
and LAPD preference setting.
tree: 709f6aebd1e1e2717c3ad437d81c6dd922563412
  1. tests/
  2. tools/
  3. AUTHORS
  4. configure.in
  5. COPYING
  6. Makefile.am
  7. README