asoc: codecs: rt5640:  fix headset power issue

Write back the power control register values
after detecting headset or headphone.

bug 1218111

Change-Id: I372c3d1e397290d8c31bd0591861731d4eb861db
Signed-off-by: Dara Ramesh <dramesh@nvidia.com>
Reviewed-on: http://git-master/r/194637
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Vijay Mali <vmali@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
1 file changed