dt-bindings: leds: bd2606mvv: Fix maximum register value

Since the chip can drive up to 6 lines, the maximum
register number should be only 5, not 6.
Signed-off-by: Marek Vasut <marex@denx.de>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Andreas Kemnade <andreas@kemnade.info>
Link: https://lore.kernel.org/r/20230704202929.91962-1-marex@denx.deSigned-off-by: Lee Jones <lee@kernel.org>

Documentation/devicetree/bindings/leds/rohm,bd2606mvv.yaml

@@ -35,7 +35,7 @@ properties:
     description: GPIO pin to enable/disable the device.
 
 patternProperties:
-  "^led@[0-6]$":
+  "^led@[0-5]$":
     type: object
     $ref: common.yaml#
     unevaluatedProperties: false
@@ -43,7 +43,7 @@ patternProperties:
     properties:
       reg:
         minimum: 0
-        maximum: 6
+        maximum: 5
 
     required:
       - reg