dt-bindings: interrupt-controller: Add SoC-specific compatible string to Marvell ODMI

As requested by Rob Herring, this commit adds a SoC-specific
compatible string to the Marvell ODMI DT binding.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Link: https://lkml.kernel.org/r/1456327494-31358-1-git-send-email-thomas.petazzoni@free-electrons.comSigned-off-by: Jason Cooper <jason@lakedaemon.net>

Documentation/devicetree/bindings/interrupt-controller/marvell,odmi-controller.txt

@@ -6,7 +6,9 @@ which can be used by on-board peripheral for MSI interrupts.
 
 Required properties:
 
-- compatible           : The value here should contain "marvell,odmi-controller".
+- compatible           : The value here should contain:
+
+    "marvell,ap806-odmi-controller", "marvell,odmi-controller".
 
 - interrupt,controller : Identifies the node as an interrupt controller.
 
@@ -29,7 +31,8 @@ Required properties:
 Example:
 
 	odmi: odmi@300000 {
-		compatible = "marvell,odmi-controller";
+		compatible = "marvell,ap806-odm-controller",
+			     "marvell,odmi-controller";
 		interrupt-controller;
 		msi-controller;
 		marvell,odmi-frames = <4>;