Qualcomm Technologies, Inc. RPMh Clocks
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Required properties :
- compatible : shall contain "qcom,rpmh-clk-sdm845" or "qcom,rpmh-clk-sdm670"

- #clock-cells : must contain 1
- mboxes : list of RPMh mailbox phandle and channel identifier tuples.
- mbox-names : list of names to identify the RPMh mailboxes used.
	       Must contain "apps" and optionally "display" if
	       the RPMh mailbox phandle for the Display RSC is
	       specified in the mboxes property.

Example :
	clock_rpmh: qcom,rpmhclk {
		compatible = "qcom,rpmh-clk-sdm845";
		#clock-cells = <1>;
		mboxes = <&apps_rsc 0>, <&disp_rsc 0>;
		mbox-names = "apps", "display";
	};