ath11k_nss: Fix iface stats showing up as 0

Generic ndo_get_stats64 was removed in kernel > 6.9. This ends up
breaking interface stats on NSS builds.

```
phy0-ap0  Link encap:Ethernet  HWaddr
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:841 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

phy1-ap0  Link encap:Ethernet  HWaddr
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
```

Until a better workaround is implemented revert the following patch.
```
commit c018411d355518a0b2a304d7543564cdd1b808b6
Author:     Breno Leitao <[email protected]>
AuthorDate: Fri Jun 7 03:20:44 2024 -0700
Commit:     Johannes Berg <[email protected]>
CommitDate: Wed Jun 12 13:04:24 2024 +0200

    wifi: mac80211: Remove generic .ndo_get_stats64

    Commit 3e2f544dd8a33 ("net: get stats64 if device if driver is
    configured") moved the callback to dev_get_tstats64() to net core, so,
    unless the driver is doing some custom stats collection, it does not
    need to set .ndo_get_stats64.

    Since this driver is now relying in NETDEV_PCPU_STAT_TSTATS, then, it
    doesn't need to set the dev_get_tstats64() generic .ndo_get_stats64
    function pointer.

    In this driver specifically, .ndo_get_stats64 basically points to
    dev_fetch_sw_netstats(). Now it will point to dev_get_tstats64(), which
    calls netdev_stats_to_stats64() and dev_fetch_sw_netstats().
    netdev_stats_to_stats64() seems irrelevant for this driver.
```

Signed-off-by: Sean Khan <[email protected]>

package/kernel/mac80211/patches/nss/subsys/999-919-Fix-dev-stats-Revert-Remove-generic-ndo_get_stats64.patch

@@ -0,0 +1,39 @@
+--- a/net/mac80211/iface.c
++++ b/net/mac80211/iface.c
+@@ -832,6 +832,12 @@ static void ieee80211_uninit(struct net_
+ 	ieee80211_teardown_sdata(IEEE80211_DEV_TO_SUB_IF(dev));
+ }
+
++static void
++ieee80211_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
++{
++	dev_fetch_sw_netstats(stats, dev->tstats);
++}
++
+ static int ieee80211_netdev_setup_tc(struct net_device *dev,
+ 				     enum tc_setup_type type, void *type_data)
+ {
+@@ -848,6 +854,7 @@ static const struct net_device_ops ieee8
+ 	.ndo_start_xmit		= ieee80211_subif_start_xmit,
+ 	.ndo_set_rx_mode	= ieee80211_set_multicast_list,
+ 	.ndo_set_mac_address 	= ieee80211_change_mac,
++	.ndo_get_stats64	= ieee80211_get_stats64,
+ 	.ndo_setup_tc		= ieee80211_netdev_setup_tc,
+ };
+
+@@ -887,6 +894,7 @@ static const struct net_device_ops ieee8
+ 	.ndo_set_rx_mode	= ieee80211_set_multicast_list,
+ 	.ndo_set_mac_address 	= ieee80211_change_mac,
+ 	.ndo_select_queue	= ieee80211_monitor_select_queue,
++	.ndo_get_stats64	= ieee80211_get_stats64,
+ };
+
+ static int ieee80211_netdev_fill_forward_path(struct net_device_path_ctx *ctx,
+@@ -954,6 +962,7 @@ static const struct net_device_ops ieee8
+ 	.ndo_start_xmit		= ieee80211_subif_start_xmit_8023,
+ 	.ndo_set_rx_mode	= ieee80211_set_multicast_list,
+ 	.ndo_set_mac_address	= ieee80211_change_mac,
++	.ndo_get_stats64	= ieee80211_get_stats64,
+ 	.ndo_fill_forward_path	= ieee80211_netdev_fill_forward_path,
+ 	.ndo_setup_tc		= ieee80211_netdev_setup_tc,
+ };