dt-bindings: Add snapshot of hyp_core_ctl driver documentation

Qualcomm Technologies, Inc. Core Control for Hypervisor

Required properties:

- compatible: should be "qcom,hyp-core-ctl"

- reg: An array of u32 values. reg[0] contains the token id to be used

       for hyp core_ctl system calls to set/get physical CPUs corresponding

       to the virtual CPUs. reg[1] ... reg[n] indicate the token ids

       to be used while referring to the virtual CPUs respectively.

Example:

	hyp-core-ctl@346 {

		compatible = "qcom,hyp-core-ctl";

		reg = <0x346 0x347 0x348>;

	};