UBUNTU: SAUCE: Redpine: Fix card write failure issue at S4 restore

BugLink: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1753438
BugLink: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1753439

In S4 regressions, at times card write failure issue is observed.
This is because of sending vap delete frame before peer delete.
Root cause of the issue is, adding peer notify frame to the head
of management queue. This is corrected and S4 is working fine.
Signed-off-by: Prameela Rani Garnepudi <prameela.garnepudi@redpinesignals.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Acked-by: Shrirang Bagul <shrirang.bagul@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

ubuntu/rsi/rsi_91x_mgmt.c

@@ -426,9 +426,6 @@ static int rsi_send_internal_mgmt_frame(struct rsi_common *common,
 	tx_params = (struct skb_info *)&IEEE80211_SKB_CB(skb)->driver_data;
 	tx_params->flags |= INTERNAL_MGMT_PKT;
 	skb->priority = MGMT_SOFT_Q;
-	if (skb->data[2] == PEER_NOTIFY)
-		skb_queue_head(&common->tx_queue[MGMT_SOFT_Q], skb);
-	else
 	skb_queue_tail(&common->tx_queue[MGMT_SOFT_Q], skb);
 	rsi_set_event(&common->tx_thread.event);
 	return 0;