net: Moved IPv6 neighbor information struct to ipv6.h file

The IPv6 neighbor information is needed in RPL so we need to
make the neighbor struct public in order to access is from
RPL code.

Change-Id: I71c7144af912209405de2b4457f3be63ab9aea68
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
2 files changed