ASoC: dt-bindings: maxim,max98925: Fix include placement in DTS example

Coding style and common logic dictates that headers should not be
included in device nodes. No functional impact.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Acked-by: Rob Herring (Arm) <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

Documentation/devicetree/bindings/sound/maxim,max98925.yaml

···
 
 examples:
   - |
+    #include <dt-bindings/gpio/gpio.h>
     i2c {
         #address-cells = <1>;
         #size-cells = <0>;
 
-        #include <dt-bindings/gpio/gpio.h>
         audio-codec@3a {
             compatible = "maxim,max98927";
             reg = <0x3a>;