tree 611c63706f72efb460835f37b28aa774d9ee34ff
parent 6986cb5b7d4cb4a5b0ea0c4f25ed0c097b49cd99
author Aleksandr Khromykh <aleksandr.khromykh@nordicsemi.no> 1659711457 +0200
committer Carles Cufí <carles.cufi@nordicsemi.no> 1659948743 +0200

Bluetooth: Mesh: don't send Friend Clear if Friend is lost

If LPN lost Friend node (all Poll attempts didn't succeed)
no reason to send Friend Clear to the Friend node.
This makes LPN powersupply  inefficient usage.
During Friend Clear sending LPN rejects any frame from
primary subnetwork.
Specificastion doesn't mandate that LPN would send Friend Clear
if polling didn't succeed.

Signed-off-by: Aleksandr Khromykh <aleksandr.khromykh@nordicsemi.no>