mmc: atmel-mci: adopt pinctrl support
Amend the atmel mci pin controller to optionally take a pin control
handle and set the state of the pins to:
- "default" on boot, resume and before performing an transfer.
- "sleep" on suspend().
This should make it possible to optimize energy usage for the pins
both for the suspend/resume cycle.
Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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