linux-phytec-ti

rtc: omap: use of_device_is_system_power_controller function

commit 0438002ac52637cef5f5734bab56d8d8750e1f37 upstream

Use of_device_is_system_power_controller instead of manually reading
the system-power-controller property from the device tree node.

Reviewed-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Keerthy <j-keerthy@ti.com>