media: dt-bindings: media: mediatek: vcodec: Change the max reg value to 2

Need to add racing control register base in device node for mt8195 support
inner racing mode. Changing the max reg value from 1 to 2.

Adding the description for VDEC_SYS and VDEC_MISC.
Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
Signed-off-by: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Tested-by: Chen-Yu Tsai <wenst@chromium.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

Documentation/devicetree/bindings/media/mediatek,vcodec-subdev-decoder.yaml

@@ -61,7 +61,10 @@ properties:
       - mediatek,mt8195-vcodec-dec
 
   reg:
-    maxItems: 1
+    minItems: 1
+    items:
+      - description: VDEC_SYS register space
+      - description: VDEC_RACING_CTRL register space
 
   iommus:
     minItems: 1
@@ -98,6 +101,7 @@ patternProperties:
 
       reg:
         maxItems: 1
+        description: VDEC_MISC register space
 
       interrupts:
         maxItems: 1