iio: adc: rockchip_saradc: better prefix for channel constant

As suggested give the current ADC_CHANNEL constant a distinct
and consistent prefix.
Suggested-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: Heiko Stuebner <heiko.stuebner@theobroma-systems.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/adc/rockchip_saradc.c

@@ -118,7 +118,7 @@ static const struct iio_info rockchip_saradc_iio_info = {
 	.read_raw = rockchip_saradc_read_raw,
 };
 
-#define ADC_CHANNEL(_index, _id) {				\
+#define SARADC_CHANNEL(_index, _id) {				\
 	.type = IIO_VOLTAGE,					\
 	.indexed = 1,						\
 	.channel = _index,					\
@@ -128,9 +128,9 @@ static const struct iio_info rockchip_saradc_iio_info = {
 }
 
 static const struct iio_chan_spec rockchip_saradc_iio_channels[] = {
-	ADC_CHANNEL(0, "adc0"),
-	ADC_CHANNEL(1, "adc1"),
-	ADC_CHANNEL(2, "adc2"),
+	SARADC_CHANNEL(0, "adc0"),
+	SARADC_CHANNEL(1, "adc1"),
+	SARADC_CHANNEL(2, "adc2"),
 };
 
 static const struct rockchip_saradc_data saradc_data = {
@@ -141,8 +141,8 @@ static const struct rockchip_saradc_data saradc_data = {
 };
 
 static const struct iio_chan_spec rockchip_rk3066_tsadc_iio_channels[] = {
-	ADC_CHANNEL(0, "adc0"),
-	ADC_CHANNEL(1, "adc1"),
+	SARADC_CHANNEL(0, "adc0"),
+	SARADC_CHANNEL(1, "adc1"),
 };
 
 static const struct rockchip_saradc_data rk3066_tsadc_data = {
@@ -153,12 +153,12 @@ static const struct rockchip_saradc_data rk3066_tsadc_data = {
 };
 
 static const struct iio_chan_spec rockchip_rk3399_saradc_iio_channels[] = {
-	ADC_CHANNEL(0, "adc0"),
-	ADC_CHANNEL(1, "adc1"),
-	ADC_CHANNEL(2, "adc2"),
-	ADC_CHANNEL(3, "adc3"),
-	ADC_CHANNEL(4, "adc4"),
-	ADC_CHANNEL(5, "adc5"),
+	SARADC_CHANNEL(0, "adc0"),
+	SARADC_CHANNEL(1, "adc1"),
+	SARADC_CHANNEL(2, "adc2"),
+	SARADC_CHANNEL(3, "adc3"),
+	SARADC_CHANNEL(4, "adc4"),
+	SARADC_CHANNEL(5, "adc5"),
 };
 
 static const struct rockchip_saradc_data rk3399_saradc_data = {