libertas: configurable beacon interval

Requires firmware version 5.110.19.p0 or newer, available here:
http://dev.laptop.org/pub/firmware/libertas/

Signed-off-by: Ashish Shukla <ashishs@marvell.com>
Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/libertas/hostcmd.h b/drivers/net/wireless/libertas/hostcmd.h
index 6477ce0..f4a265d 100644
--- a/drivers/net/wireless/libertas/hostcmd.h
+++ b/drivers/net/wireless/libertas/hostcmd.h
@@ -332,6 +332,12 @@
 	__le16 control;
 };
 
+struct cmd_ds_802_11_beacon_control {
+	__le16 action;
+	__le16 beacon_enable;
+	__le16 beacon_period;
+};
+
 struct cmd_ds_802_11_sleep_params {
 	/* ACT_GET/ACT_SET */
 	__le16 action;
@@ -668,6 +674,7 @@
 		struct cmd_ds_set_boot2_ver boot2_ver;
 		struct cmd_ds_get_tsf gettsf;
 		struct cmd_ds_802_11_subscribe_event subscribe_event;
+		struct cmd_ds_802_11_beacon_control bcn_ctrl;
 	} params;
 } __attribute__ ((packed));