[U-Boot] [RFC] spl: dw_mmc_socfpga: udevice structure is NULL in SPL

[Dinh Nguyen]

Hi,

I am trying to add support for the sdmmc driver to use the reset manager
driver in SPL. But I'm noticing that the udevice struct dev that passed
into socfpga_dwmmc_probe() is NULL, thus, I can't use the
reset_get_by_() functions to get the reset information because it needs
the dev structure is NULL.

Not sure if I'm missing a config option or something?

Thanks,
Dinh