Unisoc cpdvfs bindings

Unisoc's some SoCs integrates hardware DVFS. This DVFS driver controls settings and tuning
for communication processor include pubcp and wtlcp.

Required Properties:
- compatible: should be one of the following.
  - "sprd,sharkl5-pubcp-dvfs": for Sharkl5-compatible PUBCP DVFS,
  - "sprd,sharkl5-wtlcp-dvfs": for Sharkl5-compatible WTLCP DVFS,
  - "sprd,roc1-pubcp-dvfs": for Roc1-compatible PUBCP DVFS,
  - "sprd,roc1-wtlcp-dvfs": for Roc1-compatible WTLCP DVFS,
  - "sprd,sharkl5Pro-pubcp-dvfs": for Sharkl5Pro-compatible PUBCP DVFS,
  - "sprd,sharkl5Pro-wtlcp-dvfs": for Sharkl5Pro-compatible WTLCP DVFS.

- sprd,core_id : core identification of the dvfs processor.

- sprd,record_num: number of dvfs running recorder.


Example:
	dvfs_pubcp {
		compatible = "sprd,sharkl5-pubcp-dvfs";
		sprd,core_id = <0>;
		sprd,record_num = <10>;
	};

	dvfs_wtlcp {
		compatible = "sprd,sharkl5-wtlcp-dvfs";
		sprd,core_id = <1>;
		sprd,record_num = <6>;
	};
