Merge tag 'net-20260623' of https://source.denx.de/u-boot/custodians/u-boot-net

Pull request net-20260623.

net:
- airoha_eth: fix mt7531 mdio related initialization bug

net-legacy:
- cdp: reject CDP TLVs with a length below the 4-byte header
- Clear IP defragmentation state after returning a complete packet

net-lwip:
- Halt ethernet after network commands