This patch adds documentation for the DT bindings of the charger
subdevice of ACT8945A MFD.
Signed-off-by: NWenyou Yang <wenyou.yang@atmel.com>
Reviewed-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: NSebastian Reichel <sre@kernel.org>