wl12xx: re-enable block ack session support

Incorporate interface changes for HT support.

Add ba_bitmap field to the wl1271_link struct, to indicate
activate RX BA sessions (for AP mode).

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
diff --git a/drivers/net/wireless/wl12xx/cmd.h b/drivers/net/wireless/wl12xx/cmd.h
index 5cf92e2..8b32a57 100644
--- a/drivers/net/wireless/wl12xx/cmd.h
+++ b/drivers/net/wireless/wl12xx/cmd.h
@@ -208,6 +208,7 @@
 	CMD_STATUS_TIMEOUT		= 21, /* Driver internal use.*/
 	CMD_STATUS_FW_RESET		= 22, /* Driver internal use.*/
 	CMD_STATUS_TEMPLATE_OOM		= 23,
+	CMD_STATUS_NO_RX_BA_SESSION	= 24,
 	MAX_COMMAND_STATUS		= 0xff
 };