wl1271: Use minimum rate for each band for control messages

Currently the mac80211 is not telling a hardware rate controlled driver a
rate to use for association frames etc. So to be safe, use the lowest rate
of each band for communication.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Reviewed-by: Teemu Paasikivi <ext-teemu.3.paasikivi@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/wl12xx/wl1271_tx.h b/drivers/net/wireless/wl12xx/wl1271_tx.h
index b03c95d..3b8b7ac 100644
--- a/drivers/net/wireless/wl12xx/wl1271_tx.h
+++ b/drivers/net/wireless/wl12xx/wl1271_tx.h
@@ -160,5 +160,6 @@
 void wl1271_tx_complete(struct wl1271 *wl);
 void wl1271_tx_flush(struct wl1271 *wl);
 u8 wl1271_rate_to_idx(struct wl1271 *wl, int rate);
+u32 wl1271_tx_enabled_rates_get(struct wl1271 *wl, u32 rate_set);
 
 #endif