dt-bindings: leds: lp50xx: correct reg/unit addresses in example

The multi-led node defined address/size cells, so it is intended to have
children with unit addresses.

The second multi-led's reg property defined three LED indexes within one
reg item, which is not correct - these are three separate items.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220607075247.58048-1-krzysztof.kozlowski@linaro.org

Documentation/devicetree/bindings/leds/leds-lp50xx.yaml

@@ -99,35 +99,41 @@ examples:
                color = <LED_COLOR_ID_RGB>;
                function = LED_FUNCTION_CHARGING;
 
-               led-0 {
+               led@0 {
+                   reg = <0x0>;
                    color = <LED_COLOR_ID_RED>;
                };
 
-               led-1 {
+               led@1 {
+                   reg = <0x1>;
                    color = <LED_COLOR_ID_GREEN>;
                };
 
-               led-2 {
+               led@2 {
+                   reg = <0x2>;
                    color = <LED_COLOR_ID_BLUE>;
                };
           };
 
-          multi-led@2 {
+          multi-led@3 {
             #address-cells = <1>;
-            #size-cells = <2>;
-            reg = <0x2 0x3 0x5>;
+            #size-cells = <0>;
+            reg = <0x3>, <0x4>, <0x5>;
             color = <LED_COLOR_ID_RGB>;
             function = LED_FUNCTION_STANDBY;
 
-            led-6 {
+            led@3 {
+              reg = <0x3>;
               color = <LED_COLOR_ID_RED>;
             };
 
-            led-7 {
+            led@4 {
+              reg = <0x4>;
               color = <LED_COLOR_ID_GREEN>;
             };
 
-            led-8 {
+            led@5 {
+              reg = <0x5>;
               color = <LED_COLOR_ID_BLUE>;
             };
          };