v4l: vsp1: Use generic node name

Use the preferred generic node name in the example.
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NRob Herring <robh@kernel.org>

Documentation/devicetree/bindings/media/renesas,vsp1.txt

@@ -22,7 +22,7 @@ Optional properties:
 
 Example: R8A7790 (R-Car H2) VSP1-S node
 
-	vsp1@fe928000 {
+	vsp@fe928000 {
 		compatible = "renesas,vsp1";
 		reg = <0 0xfe928000 0 0x8000>;
 		interrupts = <0 267 IRQ_TYPE_LEVEL_HIGH>;