Merge tag 'net-20250314' of https://source.denx.de/u-boot/custodians/u-boot-net

Pull request net-20250314.

kconfig:
* Fix submenu for network commands

net:
* Remove a useless (commented out) line in net-common.h

net-lwip:
* Remove error print on failed tx
* Fix return code of ping_loop() when no ethernet device is found
* Remove superfluous newline in help text for tftp