Use __maybe_unused for power management related functions
instead of #if CONFIG_PM_SLEEP to simply the code.
Signed-off-by: NAnson Huang <Anson.Huang@nxp.com>
Acked-by: NDong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>