firmware-version bindings
-------------------------------

Required properties:
- image-type-id			: guid for image blob type
- image-index			: image index
- lowest-supported-version	: lowest supported version

Example:

	firmware-version {
		image1 {
			image-type-id = "09D7CF52-0720-4710-91D1-08469B7FE9C8";
			image-index = <1>;
			lowest-supported-version = <3>;
		};
		image2 {
			image-type-id = "5A7021F5-FEF2-48B4-AABA-832E777418C0";
			image-index = <2>;
			lowest-supported-version = <7>;
		};
	};