ASoC: mbhc: Modify special headset detection

Modify detection sequence to support the fast special headset
detection with more reliable plug type result.

CRs-Fixed: 2025438
Change-Id: I7db544af10fd960e45a9cbe0e3fe6df4b58b43d7
Signed-off-by: Walter Yang <yandongy@codeaurora.org>
Signed-off-by: Phani Kumar Uppalapati <phaniu@codeaurora.org>