Audio: Add different handler for button_press GPIO

Audio: Add different handler for button_press GPIO

BZ: 26377

Currently, only single handler is used for HP_DET,
BUTTON_PRESS interrupt line. However, it should be handled
differently. Thus, no interrupts are reported for button
press event(s).

The solution is to register seperate handlers for different
GPIO lines and handle each event appropriately.

Signed-off-by: Vaibhav Agarwal <vaibhav.agarwal@intel.com>
Change-Id: I8262487d423a10f49d93ca24be7a43cbac894738
Reviewed-on: http://android.intel.com:8080/39834
Reviewed-by: Kp, Jeeja <jeeja.kp@intel.com>
Reviewed-by: Koul, Vinod <vinod.koul@intel.com>
Reviewed-by: M, Arulselvan <arulselvan.m@intel.com>
Tested-by: M, Arulselvan <arulselvan.m@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>