dt-bindings: arm: sunxi: Add H5 MBUS compatible

The H5 SoC has a MBUS very similar to the H3 SoC, but it has a smaller
MDFS divider range (1-4 instead of 1-16). Add a separate compatible for
this variant.
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20211118031841.42315-4-samuel@sholland.org

Documentation/devicetree/bindings/arm/sunxi/allwinner,sun4i-a10-mbus.yaml

@@ -32,6 +32,7 @@ properties:
       - allwinner,sun8i-h3-mbus
       - allwinner,sun8i-r40-mbus
       - allwinner,sun50i-a64-mbus
+      - allwinner,sun50i-h5-mbus
 
   reg:
     minItems: 1
@@ -86,6 +87,7 @@ if:
         enum:
           - allwinner,sun8i-h3-mbus
           - allwinner,sun50i-a64-mbus
+          - allwinner,sun50i-h5-mbus
 
 then:
   properties: