mmc: sdhci-msm: Add support to store supported vdd-io voltages
During probe check whether the vdd-io regulator of sdhc platform device can support 1.8V and 3V and store this information as a capability of platform device. Signed-off-by: NVijay Viswanath <vviswana@codeaurora.org> Reviewed-by: NDouglas Anderson <dianders@chromium.org> Acked-by: NBjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
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