extcon-gpio: converted to have device tree capabilities

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Pyra DT: added interrupt connection from tca6424 to EVM board; configured mic-presence detector as extcon-gpio; defined LEDs on evm to show cpu and mmc activities

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
GTA04 DT: fixed extcon-gpio config for external GPS antenna detection

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
omap5-uevm: configured tca6424 interrupt

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
extcon-gpio: fixed name of debounce parameter

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Pyra DT: added optional tests for extcon-gpio on user button and mic-presence

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>