input: sensors: configure pinctrl and interrupt for bma2x2

Configure pinctrl and interrupt that allow SoC to receive
interrupt signal from sensor, these are required for motion
detection and sensor batching.

Change-Id: I29fb35cebfa03df6e851bbc4b01b901eeb9e8532
Signed-off-by: Bingzhe Cai <bingzhec@codeaurora.org>