Disable Samsungs Jack detection driver and modify SDP4430

The SDP4430 ASoC driver never tried to read from the Headset Jack detector GPIO.
Let's adapt to the way the SDP3430 works. This finally allows for the corresponding
/dev/input/event* device to report Headset Jack state changes.

Change-Id: Ibec6dce1a76ecf50d2ff917bf9e7860d1a459703
Allow the speakers to be detected first by default.
Also, set the headset microphone bias when a headset is connected.

Change-Id: I99c413743518e2cec6495a449b41798e416feab4