OPNSense/src 5ca1748sys/dev/netmap netmap_freebsd.c netmap_kloop.c

MFC r343549

netmap: add notifications on kloop stop

On sync-kloop stop, send a wake-up signal to the kloop, so that
waiting for the timeout is not needed.
Also, improve logging in netmap_freebsd.c.
DeltaFile
+40-43sys/dev/netmap/netmap_freebsd.c
+24-9sys/dev/netmap/netmap_kloop.c
+2-2sys/dev/netmap/netmap_bdg.c
+66-543 files

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