Hisilicon BVT Low Speed (LS) A/D Converter bindings

Required properties:
- compatible: should be "hisilicon,<name>-lsadc"
   - "hisilicon,hi3519av100-lsadc": for hi3519av100

- reg: physical base address of the controller and length of memory mapped
	   region.
- interrupts: The interrupt number for the ADC device.
			  see .../interrupt-controller/interrupts.txt for details.

Optional properties:
- resets: Must contain an entry for each entry in reset-names if need support
		  this option. See .../reset/reset.txt for details.
- reset-names: Must include the name "lsadc-crg".

Example:
	adc: adc@120e0000 {
		compatible = "hisilicon,hi3519av100-lsadc";
                reg = <0x045d0000 0x1000>;
                interrupts = <0 83 4>;
                resets = <&clock 0x194 16>;
                reset-names = "lsadc-crg";
	};
