Merge "Clarify getHardwareInfo() beavhior"

     * Request Hardware information about the frontend.

     *

     * The client may use this to collect vendor specific hardware information, e.g. RF

     * chip version, Demod chip version, detailed status of dvbs blind scan, etc.

     * chip version, Demod chip version, detailed status of dvbs blind scan, etc. The

     * client shouldn’t parse things or rely on any format or change their behavior

     * based on results.

     *

     * @return the frontend hardware information.

     */