dt-bindings: arm: sunxi: Add PinePhone 1.0 and 1.1 bindings

Document board compatible names for Pine64 PinePhone:

- 1.0 - Developer variant
- 1.1 - Braveheart variant
Signed-off-by: Ondrej Jirman <megous@megous.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>

Documentation/devicetree/bindings/arm/sunxi.yaml

@@ -642,6 +642,16 @@ properties:
           - const: pine64,pinebook
           - const: allwinner,sun50i-a64
 
+      - description: Pine64 PinePhone Developer Batch (1.0)
+        items:
+          - const: pine64,pinephone-1.0
+          - const: allwinner,sun50i-a64
+
+      - description: Pine64 PinePhone Braveheart (1.1)
+        items:
+          - const: pine64,pinephone-1.1
+          - const: allwinner,sun50i-a64
+
       - description: Pine64 PineTab
         items:
           - const: pine64,pinetab