uboot 2024.07 regression

[Frank Wunderlich]

Hi,

while testing clock-patches for mediatek as preparation for OF_upstream i've noticed an issue on
mt7623 based board (bananapi r2) with ethernet (no ping possible) in 2024.07-rc1 where 2024.04 is good.

i bisected it to this commit:
ff3bcb17f436 2024-02-23 Makefile: pass -undef option to cmd_gen_envp
and when reverting this commit in 2024.07 ethernet works

it seems not yet reported or reverted (till 2024.07-rc4).

I'm not sure why this commit breaks network on this board, but revert confirms it...

regards Frank