ath5k: add Mesh Point support

This enables draft-802.11s Mesh Point operation.  For that we need mesh
beaconing.  Tested with AR5212/AR5213 PCI card against Zydas and b43 mesh
nodes.

Signed-off-by: Andrey Yurovsky <andrey@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath5k/base.c b/drivers/net/wireless/ath5k/base.c
index b20a45a..8bc9b92 100644
--- a/drivers/net/wireless/ath5k/base.c
+++ b/drivers/net/wireless/ath5k/base.c
@@ -1432,7 +1432,8 @@
 	ret = ath5k_hw_get_tx_queueprops(ah, sc->bhalq, &qi);
 	if (ret)
 		return ret;
-	if (sc->opmode == IEEE80211_IF_TYPE_AP) {
+	if (sc->opmode == IEEE80211_IF_TYPE_AP ||
+		sc->opmode == IEEE80211_IF_TYPE_MESH_POINT) {
 		/*
 		 * Always burst out beacon and CAB traffic
 		 * (aifs = cwmin = cwmax = 0)
@@ -2932,6 +2933,7 @@
 	if (sc->opmode != IEEE80211_IF_TYPE_STA)
 		rfilt |= AR5K_RX_FILTER_PROBEREQ;
 	if (sc->opmode != IEEE80211_IF_TYPE_AP &&
+		sc->opmode != IEEE80211_IF_TYPE_MESH_POINT &&
 		test_bit(ATH_STAT_PROMISC, sc->status))
 		rfilt |= AR5K_RX_FILTER_PROM;
 	if (sc->opmode == IEEE80211_IF_TYPE_STA ||