wifi: mac80211: add NAN local schedule support

A NAN local schedule consist of a list of NAN channels, and an array
that maps time slots to the channel it is scheduled to (or NULL to indicate
unscheduled).

A NAN channel is the configuration of a channel which is used for NAN
operations. It is a new type of chanctx user (before, the only user is a
link). A NAN channel may not have a chanctx assigned if it is ULWed out.

A NAN channel may or may not be scheduled (for example, user space
may want to prepare the resources before the actual schedule is
configured).

Add management of the NAN local schedule.

Since we introduce a new chanctx user, also adjust the different
for_each_chanctx_user_* macros to visit also the NAN channels and take
those into account.

Co-developed-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20260326121156.03350fd40630.Id158f815cfc9b5ab1ebdb8ee608bda426e4d7474@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

net/mac80211/Makefile

@@ -36,7 +36,7 @@ mac80211-y := \
 	tdls.o \
 	ocb.o \
 	airtime.o \
-	eht.o uhr.o
+	eht.o uhr.o nan.o
 
 mac80211-$(CONFIG_MAC80211_LEDS) += led.o
 mac80211-$(CONFIG_MAC80211_DEBUGFS) += \