Based on the datasheet found here:
http://www.richtek.com/download_ds.jsp?p=RT9455Signed-off-by: NAnda-Maria Nicolae <anda-maria.nicolae@intel.com>
Reviewed-by: NKrzysztof Kozlowski <k.kozlowski.k@gmail.com>
Signed-off-by: NSebastian Reichel <sre@kernel.org>