[PATCH] Add Phytec i.MX93 support

[Mathieu Othacehe]

Hi,

Thanks for the review!

> s/imx93_phycore/phycore_imx93
>
> To fit into existing PHYTEC boards already in tree.

I deliberately picked that order so that it is aligned with most imx
boards already supported by u-boot.

The supported imx93 boards follow that pattern:

- imx93_var_som
- imx93_evk

So it felt natural to have:

- imx93_phycore

Plus the kernel device-trees are also following that order:

- imx93-phycore-xxx

On the other hand, it is true that the existing phycore boards use the
phytec_* pattern:

- phycore_am335x_r2
- phycore_imx8mm
- phycore_imx8mp
- phycore_rk3288/

So that will be confusing no matter the option that we choose.

I will come up with a v2 fixing your other remarks, but I think that
this should be addressed beforehand.

Thanks,

Mathieu