mmc: sdhci-esdhc-imx: Convert to mmc_send_tuning()
mmc: sdhci-esdhc-imx: Convert to mmc_send_tuning()

Instead of having a local function taking care of sending the tuning
command, let's use the common mmc_send_tuning() API provided by the mmc
core. In this way the request will be handled as any other request by
sdhci core.

As an effect of this change, the pm_runtime_get_sync() call at
esdhc_prepare_tuning() isn't needed any more.

This patch will also introduce another change in behavior, since before
the response pattern to the tuning command wasn't verified by
sdhci-esdhc-imx. The mmc_send_tuning() does that.

Signed-off-by: Ulf Hansson <fe47b31f388f85ce6ddf64bf3a0cf6b46077d0e6@linaro.org>
Tested-by: Dong Aisheng <f8b72116bf80189a70941b53a10a3d3b2650c711@freescale.com>
Acked-by: Dong Aisheng <f8b72116bf80189a70941b53a10a3d3b2650c711@freescale.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs