dt-bindings: timer: Add compatibles for sun50i timers

The sun50i SoCs contain timer blocks which are useful as broadcast
clockevent sources. They each have 2 interrupts, matching the A23
variant, so add the new compatible strings with the A23 compatible
as a fallback.
Acked-by: Maxime Ripard <maxime@cerno.tech>
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20210322044707.19479-3-samuel@sholland.org

Documentation/devicetree/bindings/timer/allwinner,sun4i-a10-timer.yaml

@@ -12,11 +12,18 @@ maintainers:
 
 properties:
   compatible:
-    enum:
-      - allwinner,sun4i-a10-timer
-      - allwinner,sun8i-a23-timer
-      - allwinner,sun8i-v3s-timer
-      - allwinner,suniv-f1c100s-timer
+    oneOf:
+      - enum:
+          - allwinner,sun4i-a10-timer
+          - allwinner,sun8i-a23-timer
+          - allwinner,sun8i-v3s-timer
+          - allwinner,suniv-f1c100s-timer
+      - items:
+          - enum:
+              - allwinner,sun50i-a64-timer
+              - allwinner,sun50i-h6-timer
+              - allwinner,sun50i-h616-timer
+          - const: allwinner,sun8i-a23-timer
 
   reg:
     maxItems: 1