leds: fix up dependencies

It's not useful to build LED triggers when there's no LEDs that can be
triggered by them.  Therefore, fix up the dependencies so that this
cannot happen, and fix a few users that select triggers to depend on
LEDS_CLASS as well (there is also one user that also selects LEDS_CLASS,
which is OK).

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reported-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Tested-by: Ingo Molnar <mingo@elte.hu>
Cc: Arnd Hannemann <arnd@arndnet.de>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Richard Purdie <rpurdie@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/net/mac80211/Kconfig b/net/mac80211/Kconfig
index 4d6f8653..8e8ea9c 100644
--- a/net/mac80211/Kconfig
+++ b/net/mac80211/Kconfig
@@ -92,7 +92,7 @@
 config MAC80211_LEDS
 	bool "Enable LED triggers"
 	depends on MAC80211
-	select NEW_LEDS
+	depends on LEDS_CLASS
 	select LEDS_TRIGGERS
 	---help---
 	  This option enables a few LED triggers for different