net: Utility helper to access IPv6 ND cache data

Instead of macros use inline functions to access the data so
we can catch wrong pointer type kind of errors.

Change-Id: I281a4c902cd98e71b77d2f555b2edbe56ecceea3
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
1 file changed