ath9k: add WDS interfaces to ath9k

Enable WDS for the ath9k driver.

Signed-off-by: Bill Jordan <bjordan@rajant.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
index 282bb48..d76003c 100644
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -657,6 +657,7 @@
 
 	hw->wiphy->interface_modes =
 		BIT(NL80211_IFTYPE_AP) |
+		BIT(NL80211_IFTYPE_WDS) |
 		BIT(NL80211_IFTYPE_STATION) |
 		BIT(NL80211_IFTYPE_ADHOC) |
 		BIT(NL80211_IFTYPE_MESH_POINT);