smb-lib: fix type not updating to Unknown after removal

There is a possibility where the driver fails to change
the usb type to Unknown when the cable is removed - in particular
when pd is not allowed.

Use the debounce done event of the typec change interrupt to update
the usb type to Unknown.

Change-Id: I7f201209101e54461e3d08d677bd7b266f971420
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>