wl1271: Update beacon interval properly for ad-hoc

Configure the hardware beacon interval to whatever requested by the
mac80211.

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_cmd.c b/drivers/net/wireless/wl12xx/wl1271_cmd.c
index 0aa2422..0dcb3c2 100644
--- a/drivers/net/wireless/wl12xx/wl1271_cmd.c
+++ b/drivers/net/wireless/wl12xx/wl1271_cmd.c
@@ -323,7 +323,7 @@
 						   CONF_HW_BIT_RATE_24MBPS);
 	}
 
-	join->beacon_interval = cpu_to_le16(WL1271_DEFAULT_BEACON_INT);
+	join->beacon_interval = cpu_to_le16(wl->beacon_int);
 	join->dtim_interval = WL1271_DEFAULT_DTIM_PERIOD;
 
 	join->channel = wl->channel;