madwifi: fix fast-frame related dma unmap bug

SVN-Revision: 14192

package/madwifi/patches/395-ath_ff_unmap.patch

@@ -0,0 +1,11 @@
+--- a/ath/if_ath.c
++++ b/ath/if_ath.c
+@@ -13508,7 +13508,7 @@ cleanup_ath_buf(struct ath_softc *sc, st
+ 				bus_unmap_single(
+ 					sc->sc_bdev,
+ 					bf->bf_skbaddrff[i], 
+-					(direction == BUS_DMA_TODEVICE ? 
++					(direction == BUS_DMA_FROMDEVICE ? 
+ 					 sc->sc_rxbufsize : ffskb->len), 
+ 					direction);
+ 				bf->bf_skbaddrff[i] = 0;