wlcore: add space for private area when allocating fw_status

When allocating the fw_status structure, the space for the
lower-driver private area was missing.  This was causing an illegal
write outside the allocated area, which was causing random oopses
around the kernel.
Signed-off-by: NLuciano Coelho <coelho@ti.com>
Signed-off-by: NArik Nemtsov <arik@wizery.com>

drivers/net/wireless/ti/wlcore/main.c

@@ -904,7 +904,8 @@ static void wl1271_fw_wakeup(struct wl1271 *wl)
 static int wl1271_setup(struct wl1271 *wl)
 {
 	wl->fw_status_1 = kmalloc(WLCORE_FW_STATUS_1_LEN(wl->num_rx_desc) +
-				  sizeof(*wl->fw_status_2), GFP_KERNEL);
+				  sizeof(*wl->fw_status_2) +
+				  wl->fw_status_priv_len, GFP_KERNEL);
 	if (!wl->fw_status_1)
 		return -ENOMEM;