dt-bindings: Add compatible for BCM2711 DSI1

raspberrypi inclusion
category: feature
bugzilla: 50432

--------------------------------

DSI1 on BCM2711 doesn't require the DMA workaround that is used
on BCM2835/6/7, therefore it needs a new compatible string.
Signed-off-by: NDave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: NFang Yafen <yafen@iscas.ac.cn>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

Documentation/devicetree/bindings/display/brcm,bcm2835-dsi0.yaml

@@ -20,6 +20,7 @@ properties:
     enum:
       - brcm,bcm2835-dsi0
       - brcm,bcm2835-dsi1
+      - brcm,bcm2711-dsi1
 
   reg:
     maxItems: 1