ASoC: AQT1000: Add Interrupt controller support for AQT codec

AQT codec has MBHC(Multi Button Headset Controller) and other
headset interrupts. Add interrupt controller driver to handle
AQT codec interrupts.

Change-Id: Ic8eb6b0ca24aa82c9adeb9f0fa0bf8768b424787
Signed-off-by: Sudheer Papothi <spapothi@codeaurora.org>