kernel: pick patches for MediaTek Ethernet from linux-next

Pick patches with several fixes and improvements, preparation for
upcoming WED (TX) [1] as well as basic XDP support [2] with MediaTek's
Filogic SoCs to the mtk_eth_soc driver.

Also pick follow-up patch fixing Ethernet on MT7621 [3].

Tested on Bananapi BPi-R3 (MT7986), Bananapi BPi-R64 (MT7622),
Bananapi BPi-R2 (MT7623), MikroTik RouterBoard M11G (MT7621).

[1]: https://patchwork.kernel.org/project/netdevbpf/list/?series=662108&state=*
[2]: https://patchwork.kernel.org/project/netdevbpf/list/?series=675368&state=*
     (the first part of the series adding wed nodes to mt7986a.dtsi was
      applied to the copy of mt7986a.dtsi in our tree)
[3]: https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=5e69163d3b9931098922b3fc2f8e786af8c1f37e

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

target/linux/generic/hack-5.15/721-net-add-packet-mangeling.patch

@@ -71,7 +71,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
   */
 --- a/include/linux/skbuff.h
 +++ b/include/linux/skbuff.h
-@@ -2851,6 +2851,10 @@ static inline int pskb_trim(struct sk_bu
+@@ -2852,6 +2852,10 @@ static inline int pskb_trim(struct sk_bu
  	return (len < skb->len) ? __pskb_trim(skb, len) : 0;
  }
  
@@ -82,7 +82,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  /**
   *	pskb_trim_unique - remove end from a paged unique (not cloned) buffer
   *	@skb: buffer to alter
-@@ -3001,16 +3005,6 @@ static inline struct sk_buff *dev_alloc_
+@@ -3002,16 +3006,6 @@ static inline struct sk_buff *dev_alloc_
  }