dt-bindings: crypto: dcp: use generic node name

crypto node should use the "crypto" generic naming,
and not the "dcp" specific one.
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Documentation/devicetree/bindings/crypto/fsl-dcp.txt

@@ -11,7 +11,7 @@ Required properties:
 
 Example:
 
-dcp@80028000 {
+dcp: crypto@80028000 {
 	compatible = "fsl,imx28-dcp", "fsl,imx23-dcp";
 	reg = <0x80028000 0x2000>;
 	interrupts = <52 53>;