loos c43b38ad99 Add support for the GPIO SD Card VCC regulator/switch and the GPIO SD Card
detection pins to the Marvell Xenon SDHCI controller.

These features are enable by 'vqmmc-supply' and 'cd-gpios' properties in the
DTS.

This fixes the SD Card detection on espressobin.

Sponsored by:	Rubicon Communications, LLC (Netgate)
2019-06-10 21:50:07 +00:00
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