dt-bindings: mmc: cdns,sdhci: ref sdhci-common.yaml

Since the Cadence sdhci controller is sdhci compatible, the cdns,sdhci.yaml
should ref sdhci-common.yaml to use 'sdhci-caps-mask' property.

Signed-off-by: Pierre-Henry Moussay <pierre-henry.moussay@microchip.com>
Link: https://lore.kernel.org/r/20240930095449.1813195-17-pierre-henry.moussay@microchip.com


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