mmc: sdhci-of-esdhc: add workaround for pre divider initial value
mmc: sdhci-of-esdhc: add workaround for pre divider initial value

For eSDHC(version < 2.3), the pre divider only could divide base clock
by 2 at least. Add workaround for this to avoid unexpected issue.

Signed-off-by: Yangbo Lu <8e8a9cf964d9a1c714752d84c97dd816751bdd12@freescale.com>
Acked-by: Joakim Tjernlund <28ec1adb181e0f7ff73a9ed1532c061a187559fb@transmode.se>
Fixes: bd455029d01c ("mmc: sdhci-of-esdhc: Pre divider starts at 1")
Signed-off-by: Ulf Hansson <fe47b31f388f85ce6ddf64bf3a0cf6b46077d0e6@linaro.org>

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