ASoC: wcd: schedule correct work for headphone

Sometimes slow insertion of headphone is detected
as headset, so schedule correct work for headphone
to correct plug type detection.

CRs-Fixed: 705961
Change-Id: I697cfdf915461a0d8fd3334dda351ea47c2a47a9
Signed-off-by: Yeleswarapu Nagaradhesh <nagaradh@codeaurora.org>