Added DT bindings for DebugSS

Documentation/devicetree/bindings/misc/dra7xx-debugss.txt

@@ -0,0 +1,22 @@
+Texas Instruments Debug Sub-System (DebugSS) module for DRA7xx devices
+
+Required properties:
+- compatible : Should be "ti,dra7xx-debugss"
+
+Optional properties:
+- clocks : the clocks feeding the Debug sub-system.
+- clocks-names : clock name strings correspond to the clocks
+		 defined above. These strings are used inside
+		 module source code to identify the respective
+                 clocks
+
+Documentation:
+http://www.ti.com/lit/ds/symlink/dra746.pdf
+
+Examples:
+
+debugss: debugss {
+        compatible = "ti,dra7xx-debugss";
+        clocks = <&sys_clkin1>;
+        clock-names = "sysclockin1";
+};

arch/arm/boot/dts/dra7.dtsi

@@ -2131,6 +2131,12 @@
 				reg = <1>;
 			};
 		};
+
+                debugss: debugss {
+                        compatible = "ti,dra7xx-debugss";
+                        clocks = <&sys_clkin1>;
+                        clock-names = "sysclockin1";
+                };
 	};
 
 	thermal_zones: thermal-zones {