asoc: wcd937x: Reset mbhc detection type after ssr

If headset is connected during SSR, after recovery mbhc
driver expects a new detection event as the driver is reinitialized.
Reset detection type to insertion to retrigger a hw interrupt
for mbhc driver.

Change-Id: I55705eb6b6a289deb5dc16a4b9ef6252082a3d9a
Signed-off-by: Ramprasad Katkam <katkam@codeaurora.org>