dt-bindings: pinctrl: qcom,ipq6018: fix indentation in example

Bindings example should be indented with 4-spaces.
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20221016170035.35014-14-krzysztof.kozlowski@linaro.orgSigned-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Documentation/devicetree/bindings/pinctrl/qcom,ipq6018-pinctrl.yaml

@@ -111,21 +111,21 @@ additionalProperties: false
 
 examples:
   - |
-        #include <dt-bindings/interrupt-controller/arm-gic.h>
-        tlmm: pinctrl@1000000 {
-              compatible = "qcom,ipq6018-pinctrl";
-              reg = <0x01000000 0x300000>;
-              interrupts = <GIC_SPI 208 IRQ_TYPE_LEVEL_HIGH>;
-              interrupt-controller;
-              #interrupt-cells = <2>;
-              gpio-controller;
-              #gpio-cells = <2>;
-              gpio-ranges = <&tlmm 0 0 80>;
-
-              serial3-state {
-                      pins = "gpio44", "gpio45";
-                      function = "blsp2_uart";
-                      drive-strength = <8>;
-                      bias-pull-down;
-              };
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    tlmm: pinctrl@1000000 {
+        compatible = "qcom,ipq6018-pinctrl";
+        reg = <0x01000000 0x300000>;
+        interrupts = <GIC_SPI 208 IRQ_TYPE_LEVEL_HIGH>;
+        interrupt-controller;
+        #interrupt-cells = <2>;
+        gpio-controller;
+        #gpio-cells = <2>;
+        gpio-ranges = <&tlmm 0 0 80>;
+
+        serial3-state {
+            pins = "gpio44", "gpio45";
+            function = "blsp2_uart";
+            drive-strength = <8>;
+            bias-pull-down;
         };
+    };