dt-bindings: mmc: arasan,sdci: Drop clock-output-names from dependencies

The schema defines dependency only of clock-output-names on #clock-cells.
The dependency in opposite direction - requirement of clock-output-names
if #clock-cells is defined - should be explicitly included in the
bindings.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Reviewed-by: Rob Herring <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Ulf Hansson <[e-mail]>

Documentation/devicetree/bindings/mmc/arasan,sdhci.yaml

···
       The MIO bank number in which the command and data lines are configured.
 
 dependencies:
-  clock-output-names: [ '#clock-cells' ]
   '#clock-cells': [ clock-output-names ]
 
 required: