mmc: sdhci: Add a helper function for dump register in dynamic debug mode

Add a helper function for dump register in dynamic debug mode.

Signed-off-by: Victor Shih <victor.shih@genesyslogic.com.tw>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20250606110121.96314-3-victorshihgli@gmail.com


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