mmc: sdhci-pxav2: add initial support for PXA168 V1 controller

Add a new compatible string for the version 1 controller used in the
PXA168, along with necessary quirks. Use a separate ops struct in
preparation for a silicon bug workaround only necessary on V1.

Signed-off-by: Doug Brown <doug@schmorgal.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20230116194401.20372-2-doug@schmorgal.com


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