media: dt-bindings: media: amlogic,gx-vdec: add bindings for SM1 family

Add bindings to support the Amlogic Video Decoder on the Amlogic
SM1 family.

SM1 has a slightly different power management handling, thus needing a
separate compatible.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

Documentation/devicetree/bindings/media/amlogic,gx-vdec.yaml

@@ -36,6 +36,7 @@ properties:
         - const: amlogic,gx-vdec
       - enum:
         - amlogic,g12a-vdec # G12A (S905X2, S905D2)
+        - amlogic,sm1-vdec # SM1 (S905X3, S905D3)
 
   interrupts:
     minItems: 2
@@ -103,6 +104,7 @@ allOf:
           contains:
             enum:
               - amlogic,g12a-vdec
+              - amlogic,sm1-vdec
 
     then:
       properties: