dt-bindings: mfd: pm8008: Add reset gpio

Describe the optional reset gpio (which may not be wired up).

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20240608155526.12996-2-johan+linaro@kernel.org
Signed-off-by: Lee Jones <lee@kernel.org>

Documentation/devicetree/bindings/mfd/qcom,pm8008.yaml

@@ -29,6 +29,9 @@ properties:
 
     description: Parent interrupt.
 
+  reset-gpios:
+    maxItems: 1
+
   "#interrupt-cells":
     const: 2
 
@@ -97,6 +100,7 @@ additionalProperties: false
 
 examples:
   - |
+    #include <dt-bindings/gpio/gpio.h>
     #include <dt-bindings/mfd/qcom-pm8008.h>
     #include <dt-bindings/interrupt-controller/irq.h>
 
@@ -115,6 +119,8 @@ examples:
         interrupt-parent = <&tlmm>;
         interrupts = <32 IRQ_TYPE_EDGE_RISING>;
 
+        reset-gpios = <&tlmm 42 GPIO_ACTIVE_LOW>;
+
         pm8008_gpios: gpio@c000 {
           compatible = "qcom,pm8008-gpio", "qcom,spmi-gpio";
           reg = <0xc000>;