mmc: sdhci: Centralize CMD and DATA reset handling

Centralize CMD and DATA reset handling so that is more obvious how reset
is handled in different situations.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20220926192022.85660-5-adrian.hunter@intel.com


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