iio: ti_am335x_adc: Add DT support

Add DT support for client ADC driver.

Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Patil, Rachna <rachna@ti.com>
Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
diff --git a/drivers/mfd/ti_am335x_tscadc.c b/drivers/mfd/ti_am335x_tscadc.c
index f509766..1d6c740 100644
--- a/drivers/mfd/ti_am335x_tscadc.c
+++ b/drivers/mfd/ti_am335x_tscadc.c
@@ -210,6 +210,7 @@
 	/* ADC Cell */
 	cell = &tscadc->cells[ADC_CELL];
 	cell->name = "tiadc";
+	cell->of_compatible = "ti,am3359-adc";
 	cell->platform_data = &tscadc;
 	cell->pdata_size = sizeof(tscadc);