[ipa] When including MGCP our messages might be bigger than 300 byte

The length field of the IPA header allows to have 16bit numbers
and I just ran into the 300 byte limit with MGCP messages. Make it
three times the size and see how long this is going to be enough.
1 file changed
tree: 5282e79016b8edc373df35ee578a93cd53b013e4
  1. hlrsync/
  2. libosmocore/
  3. linux-kernel/
  4. openbsc/
  5. rrlp-ephemeris/
  6. wireshark/