ath9k: Fix DEBUG_FS dependency for ath9k

Reported-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/Kconfig b/drivers/net/wireless/ath/ath9k/Kconfig
index c91bc61..7944c25 100644
--- a/drivers/net/wireless/ath/ath9k/Kconfig
+++ b/drivers/net/wireless/ath/ath9k/Kconfig
@@ -56,7 +56,7 @@
 
 config ATH9K_DEBUGFS
 	bool "Atheros ath9k debugging"
-	depends on ATH9K
+	depends on ATH9K && DEBUG_FS
 	select MAC80211_DEBUGFS
 	select RELAY
 	---help---