mmc: sdhci-pxav2: add SDIO card IRQ workaround for PXA168 V1 controller

mmc: sdhci-pxav2: add SDIO card IRQ workaround for PXA168 V1 controller

The PXA168 has a documented silicon bug that causes SDIO card IRQs to be
missed. Implement the first half of the suggested workaround, which
involves resetting the data port logic and issuing a dummy CMD0 to
restart the clock.

Signed-off-by: Doug Brown <doug@schmorgal.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20230116194401.20372-7-doug@schmorgal.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>