[PATCH] dt-bindings: serial: uniphier: Add "resets" property as optional

[Kunihiko Hayashi <hayashi.kunihiko@xxxxxxxxxxxxx>]

UniPhier UART controller has a reset lines from system controller.
Add "resets" property to fix the following warning.

  uniphier-ld11-global.dtb: serial@54006800: 'resets' does not match any of the regexes: 'pinctrl-[0-9]+'
      From schema: Documentation/devicetree/bindings/serial/socionext,uniphier-uart.yaml

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@xxxxxxxxxxxxx>
---
 .../devicetree/bindings/serial/socionext,uniphier-uart.yaml    | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/serial/socionext,uniphier-uart.yaml b/Documentation/devicetree/bindings/serial/socionext,uniphier-uart.yaml
index d490c7c4b967..d14d8c9cfe4d 100644
--- a/Documentation/devicetree/bindings/serial/socionext,uniphier-uart.yaml
+++ b/Documentation/devicetree/bindings/serial/socionext,uniphier-uart.yaml
@@ -22,6 +22,9 @@ properties:
   clocks:
     minItems: 1
 
+  resets:
+    minItems: 1
+
   auto-flow-control:
     description: enable automatic flow control support.
     $ref: /schemas/types.yaml#/definitions/flag
-- 
2.25.1