mac80211: Fix radiotap header it_present on big endian CPUs

When the IEEE80211_RADIOTAP_RATE flag was moved to be conditional, it
was mistakenly left without cpu_to_le32(). Fix that.
Signed-off-by: Jouni Malinen <j@w1.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

net/mac80211/rx.c

@@ -158,7 +158,7 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
 		 */
 		*pos = 0;
 	} else {
-		rthdr->it_present |= (1 << IEEE80211_RADIOTAP_RATE);
+		rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_RATE);
 		*pos = rate->bitrate / 5;
 	}
 	pos++;