driver core: drivers/base/sys.c: update comments

There are no functions named sys_device_shutdown or sys_device_suspend
in the kernel.
They should be fixed to sysdev_shutdown and sysdev_suspend respectively.
Signed-off-by: NQinghuang Feng <qhfeng.kernel@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/base/sys.c

@@ -355,7 +355,7 @@ static void __sysdev_resume(struct sys_device *dev)
  *	sysdev_suspend - Suspend all system devices.
  *	@state:		Power state to enter.
  *
- *	We perform an almost identical operation as sys_device_shutdown()
+ *	We perform an almost identical operation as sysdev_shutdown()
  *	above, though calling ->suspend() instead. Interrupts are disabled
  *	when this called. Devices are responsible for both saving state and
  *	quiescing or powering down the device.
@@ -437,7 +437,7 @@ int sysdev_suspend(pm_message_t state)
 /**
  *	sysdev_resume - Bring system devices back to life.
  *
- *	Similar to sys_device_suspend(), but we iterate the list forwards
+ *	Similar to sysdev_suspend(), but we iterate the list forwards
  *	to guarantee that parent devices are resumed before their children.
  *
  *	Note: Interrupts are disabled when called.