mfd: cros_ec: Don't try to grab log when suspended

mfd: cros_ec: Don't try to grab log when suspended

We should stop our worker thread while we're suspended.  If we don't
then we'll get messages like:

  cros-ec-spi spi5.0: spi transfer failed: -108
  cros-ec-spi spi5.0: cs-deassert spi transfer failed: -108
  cros-ec-ctl cros-ec-ctl.0.auto: EC communication failed

Signed-off-by: Douglas Anderson <[email protected]>
Signed-off-by: Enric Balletbo i Serra <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Signed-off-by: Lee Jones <[email protected]>