iio: exynos-adc: fix irqf_oneshot.cocci warnings

Since commit 1c6c6952 ("genirq: Reject bogus threaded irq requests")
threaded IRQs without a primary handler need to be requested with
IRQF_ONESHOT, otherwise the request will fail.

So pass the IRQF_ONESHOT flag in this case.

Generated by: scripts/coccinelle/misc/irqf_oneshot.cocci
Signed-off-by: NFengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NValentin Rothberg <valentinrothberg@gmail.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>

drivers/iio/adc/exynos_adc.c

@@ -739,7 +739,7 @@ static int exynos_adc_ts_init(struct exynos_adc *info)
 
 	disable_irq(info->tsirq);
 	ret = request_threaded_irq(info->tsirq, NULL, exynos_ts_isr,
-				   0, "touchscreen", info);
+				   IRQF_ONESHOT, "touchscreen", info);
 	if (ret)
 		input_unregister_device(info->input);