[PORT FROM R2] [Workaround][Audio] Reduce pmdown_time to 1 second

[PORT FROM R2] [Workaround][Audio] Reduce pmdown_time to 1 second

BZ: 14981

ASoc core powering down delay is reduced to 1 sec. The switching time
was measured in the driver to be around 110ms for switching b/w HS
and IHF, so 1 second delay is sufficient.

Change-Id: Id877db188f7fb03223ee3a0c7e6f69834b02527b
Old-Change-Id: Ib4528a9af4b5d0b6fa37c847d0ec484ec5e1e11d
Signed-off-by: Fabien Barthes <fabienx.barthes@intel.com>
Reviewed-on: http://android.intel.com:8080/29238
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>