Input: omap-keypad - set up irq type from DT

OMAP4 is DT only, so read the keypad IRQ type from DT instead hard-coding
it in the driver.
Signed-off-by: Illia Smyrnov <illia.smyrnov@ti.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/keyboard/omap4-keypad.c

@@ -373,8 +373,7 @@ static int omap4_keypad_probe(struct platform_device *pdev)
 	}
 
 	error = request_threaded_irq(keypad_data->irq, omap4_keypad_irq_handler,
-				     omap4_keypad_irq_thread_fn,
-				     IRQF_TRIGGER_RISING,
+				     omap4_keypad_irq_thread_fn, 0,
 				     "omap4-keypad", keypad_data);
 	if (error) {
 		dev_err(&pdev->dev, "failed to register interrupt\n");