drivers: sensor: examplesensor: use gpio_pin_get_dt

Use the recently introduced GPIO API that allows obtaining pin state
using the gpio_dt_spec struct.

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>

drivers/sensor/examplesensor/examplesensor.c

@@ -26,7 +26,7 @@ static int examplesensor_sample_fetch(const struct device *dev,
 	const struct examplesensor_config *config = dev->config;
 	struct examplesensor_data *data = dev->data;
 
-	data->state = gpio_pin_get(config->input.port, config->input.pin);
+	data->state = gpio_pin_get_dt(&config->input);
 
 	return 0;
 }