dt-bindings: clock: Add rpmh clock bindings for Lahaina

Add binding documentation and IDs for clock rpmh driver on Lahaina.

Change-Id: I0a369aa782403dde8564ea229b7bbf2f767def5a

bindings/clock/qcom,rpmh-clk.txt

@@ -7,6 +7,7 @@ other hardware subsystems via RSC to control clocks.
 
 Required properties :
 - compatible : Shall contain one of the following:
+		"qcom,lahaina-rpmh-clk"
 		"qcom,kona-rpmh-clk",
 		"qcom,sdm845-rpmh-clk"
 
@@ -29,3 +30,10 @@ Example :
 			#clock-cells = <1>;
 		};
 	};
+
+	&apps_rsc {
+		rpmhcc: clock-controller {
+			compatible = "qcom,lahaina-rpmh-clk";
+			#clock-cells = <1>;
+		};
+	};