dt-bindings: power: Correct interrupt flags in examples

GPIO_ACTIVE_x flags are not correct in the context of interrupt flags.
These are simple defines so they could be used in DTS but they will not
have the same meaning:
1. GPIO_ACTIVE_HIGH = 0 = IRQ_TYPE_NONE
2. GPIO_ACTIVE_LOW  = 1 = IRQ_TYPE_EDGE_RISING

Correct the interrupt flags, assuming the author of the code wanted some
logical behavior behind the name "ACTIVE_xxx", this is:
  ACTIVE_LOW => IRQ_TYPE_LEVEL_LOW
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20200908145922.4502-1-krzk@kernel.orgSigned-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/power/supply/act8945a-charger.txt

@@ -33,7 +33,7 @@ Example:
 			pinctrl-names = "default";
 			pinctrl-0 = <&pinctrl_charger_chglev &pinctrl_charger_lbo &pinctrl_charger_irq>;
 			interrupt-parent = <&pioA>;
-			interrupts = <45 GPIO_ACTIVE_LOW>;
+			interrupts = <45 IRQ_TYPE_LEVEL_LOW>;
 
 			active-semi,chglev-gpios = <&pioA 12 GPIO_ACTIVE_HIGH>;
 			active-semi,lbo-gpios = <&pioA 72 GPIO_ACTIVE_LOW>;