dt-bindings: arm: amlogic: Add SoC information bindings

  - "amlogic,q201" (Meson gxm s912)

  - "kingnovel,r-box-pro" (Meson gxm S912)

  - "nexbox,a1" (Meson gxm s912)

Amlogic Meson Firmware registers Interface

------------------------------------------

The Meson SoCs have a register bank with status and data shared with the

secure firmware.

Required properties:

 - compatible: For Meson GX SoCs, must be "amlogic,meson-gx-ao-secure", "syscon"

Properties should indentify components of this register interface :

Meson GX SoC Information

------------------------

A firmware register encodes the SoC type, package and revision information on

the Meson GX SoCs.

If present, the following property should be added :

Optional properties:

  - amlogic,has-chip-id: If present, the interface gives the current SoC version.

Example

-------

ao-secure@140 {

	compatible = "amlogic,meson-gx-ao-secure", "syscon";

	reg = <0x0 0x140 0x0 0x140>;

	amlogic,has-chip-id;

};