mmc: zynq: parse dt when probing

Hi Michal,

I did not revert b8e25ef16a58 ("mmc: sdhci: Read capabilities register1 and update host caps") since without those changes, the UHS caps would not disabled if you forgot to add the "no-1-8-v" property. I think relying on the voltage configuration instead is worth keeping.

Best Regards, Ben