In analogy with commits 5af84b82 and 97df8c12, using
asynchronous threads can improve the overall resume_early
time significantly.

This patch is for resume_early phase.
Signed-off-by: NChuansheng Liu <chuansheng.liu@intel.com>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>