sdhci: fdt: Correctly export clock per the binding

[manu]

Summary

The binding says that we can have one or two clocks to export.
The first one is the actual sdclock while the second is the sample clock.
Both have the same parent, clk_xin.
Correctly export the clocks for RK3399 and ZynqMP.
No need to use a high ID as before, we have our own clock domain so use
ids starting at 1 as all exported clocks should be.

Sponsored by: Beckhoff Automation GmbH & Co. KG

[bz]

Scrolling through looks ok to me.

[bz]

sys/dev/sdhci/sdhci_fdt.c

359

Hmm should this be part of D41809?

[manu]

sys/dev/sdhci/sdhci_fdt.c

359

No, this is the old function name that exported the clock

[bz]

sys/dev/sdhci/sdhci_fdt.c

359

Sorry, I went by email order and that was confusing.