dt-bindings: mmc: meson-gx: support specifying cd interrupt

Support passing a second interrupt as card detect interrupt.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/1c5996a5-491f-39d6-b120-bbef86473729@gmail.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Documentation/devicetree/bindings/mmc/amlogic,meson-gx-mmc.yaml

@@ -28,7 +28,7 @@ properties:
     maxItems: 1
 
   interrupts:
-    maxItems: 1
+    maxItems: 2
 
   clocks:
     maxItems: 3