MLK-20166 can: flexcan: fix CAN can't wakeup system during suspend

MLK-20166 can: flexcan: fix CAN can't wakeup system during suspend

The system can be wakeuped only when system is totally suspend, when the
wakeup event comes during suspend will cause the system hang. For the
reason that CAN will not call flexcan_noirq_resume() callback if the wakeup
event comes before noirq suspend stage.

The way to fix the issue is that assure the system to call
flexcan_noirq_suspend() during suspend and then call
flexcan_noirq_resume() during resume.

Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: Arulpandiyan Vadivel <arulpandiyan_vadivel@mentor.com>