net: uip: Add support for user data in simple UDP API

Adding the user pointer to the uIP simple-udp API is vital so that
we can pass the net_buf to UDP receiver callback.

Change-Id: If7ee24f344fbd23eb7e0c3a99e78deb996d3667d
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
2 files changed