bindings: pm8941-misc: Add support for VBUS detection

Add interrupt support for reporting VBUS detection status that can be
detected via a dedicated PMIC pin.

Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>
Signed-off-by: Guru Das Srinagesh <gurus@codeaurora.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>

Documentation/devicetree/bindings/extcon/qcom,pm8941-misc.yaml

@@ -22,11 +22,14 @@ properties:
     maxItems: 1
 
   interrupts:
-    maxItems: 1
+    minItems: 1
+    maxItems: 2
 
   interrupt-names:
+    minItems: 1
     items:
       - const: usb_id
+      - const: usb_vbus
 
 required:
   - compatible