dt-bindings: spmi: spmi-pmic-arb-debug: add clock management support

Add support to specify a clock that is needed by the SPMI PMIC
arbiter debug bus.

Change-Id: I466979d93b6ca38974a2ef4b391c66507281064e

bindings/spmi/qcom,spmi-pmic-arb-debug.txt

@@ -35,6 +35,19 @@ Supported Properties:
 		    the corresponding addresses are specified in the reg
 		    property.
 
+- clocks
+	Usage:      optional
+	Value type: <prop-encoded-array>
+	Definition: Clock tuple consisting of a phandle to a clock controller
+		    device and the clock ID number for the SPMI debug controller
+		    clock.
+
+- clock-names
+	Usage:      required if clocks property is specified
+	Value type: <string>
+	Definition: Defines the name of the clock defined in the "clocks"
+		    property.  This must be "core_clk".
+
 - #address-cells
 	Usage:      required
 	Value type: <u32>
@@ -57,6 +70,8 @@ qcom,spmi-debug@6b22000 {
 	compatible = "qcom,spmi-pmic-arb-debug";
 	reg = <0x6b22000 0x60>, <0x7820a8 4>;
 	reg-names = "core", "fuse";
+	clocks = <&clock_aop QDSS_CLK>;
+	clock-names = "core_clk";
 	qcom,fuse-disable-bit = <12>;
 	#address-cells = <2>;
 	#size-cells = <0>;