dt-bindings: pinctrl: qcom,sdm845-pinctrl: add GPIO hogs

Allow GPIO hogs in pin controller node.  qcom/sdm845-cheza.dtsi already
uses it.

Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20221121081221.30745-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Documentation/devicetree/bindings/pinctrl/qcom,sdm845-pinctrl.yaml

@@ -48,6 +48,10 @@ patternProperties:
             $ref: "#/$defs/qcom-sdm845-tlmm-state"
         additionalProperties: false
 
+  "-hog(-[0-9]+)?$":
+    required:
+      - gpio-hog
+
 $defs:
   qcom-sdm845-tlmm-state:
     type: object
@@ -117,6 +121,7 @@ additionalProperties: false
 
 examples:
   - |
+    #include <dt-bindings/gpio/gpio.h>
     #include <dt-bindings/interrupt-controller/arm-gic.h>
 
     pinctrl@3400000 {
@@ -130,6 +135,12 @@ examples:
         gpio-ranges = <&tlmm 0 0 151>;
         wakeup-parent = <&pdc_intc>;
 
+        ap-suspend-l-hog {
+            gpio-hog;
+            gpios = <126 GPIO_ACTIVE_LOW>;
+            output-low;
+        };
+
         cci0-default-state {
             pins = "gpio17", "gpio18";
             function = "cci_i2c";