mesh: Fix friend node cache message
mesh: Fix friend node cache message

Friend node cache segment message for lpn, message with
sequence number can't change, since could cause lpn replay
attack.

This is port of 325288d531678bfecca68869332e06ed59856efb

apache/mynewt-nimble,apache/mynewt-nimble,apache/mynewt-nimble,apache/mynewt-nimble,apache/mynewt-nimble