mmc: sdhci_am654: Add Support for SR2.0

Add Support for AM65x PG2.0. Use the SoC bus framework to fixup
the driver data and skip do DLL calibration if the revision is 1.0

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Link: https://lore.kernel.org/r/20200619125801.9530-4-faiz_abbas@ti.com


Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>