dt-bindings: leds: common: fix unit address in max77693 example

The max77693 LED device node should not take an unit address, because it
is instantiated from a max77693 I2C parent device node.  This also
splits all examples to separate DTS examples because they are actually
independent.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>

Documentation/devicetree/bindings/leds/common.yaml

@@ -185,9 +185,11 @@ examples:
         };
     };
 
-    led-controller@0 {
+  - |
+    #include <dt-bindings/leds/common.h>
+
+    led-controller {
         compatible = "maxim,max77693-led";
-        reg = <0 0x100>;
 
         led {
             function = LED_FUNCTION_FLASH;
@@ -199,6 +201,9 @@ examples:
         };
     };
 
+  - |
+    #include <dt-bindings/leds/common.h>
+
     i2c {
         #address-cells = <1>;
         #size-cells = <0>;