zynqmp: Intended use of ZYNQMP_PSU_INIT_ENABLED

[Sean Anderson]

Hi Michal,

How is ZYNQMP_PSU_INIT_ENABLED supposed to work? U-Boot runs from DRAM,
and one of the things that psu_init does is initialize DRAM. This tends
not to go very well. So I am wondering how this config is supposed to
work? Note I am not talking about the SPL variant of this option.

I am wondering if we even need this config in the first place.

--Sean