iio: adc: meson: move enums declaration before variables declaration

Allow to use enum items for variables initialization.
For this, move enums upper in the code.
Signed-off-by: George Stark <GNStark@sberdevices.ru>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20230714114010.293440-3-gnstark@sberdevices.ruSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/adc/meson_saradc.c

@@ -202,6 +202,28 @@
 	.datasheet_name = "TEMP_SENSOR",				\
 }
 
+enum meson_sar_adc_avg_mode {
+	NO_AVERAGING = 0x0,
+	MEAN_AVERAGING = 0x1,
+	MEDIAN_AVERAGING = 0x2,
+};
+
+enum meson_sar_adc_num_samples {
+	ONE_SAMPLE = 0x0,
+	TWO_SAMPLES = 0x1,
+	FOUR_SAMPLES = 0x2,
+	EIGHT_SAMPLES = 0x3,
+};
+
+enum meson_sar_adc_chan7_mux_sel {
+	CHAN7_MUX_VSS = 0x0,
+	CHAN7_MUX_VDD_DIV4 = 0x1,
+	CHAN7_MUX_VDD_DIV2 = 0x2,
+	CHAN7_MUX_VDD_MUL3_DIV4 = 0x3,
+	CHAN7_MUX_VDD = 0x4,
+	CHAN7_MUX_CH7_INPUT = 0x7,
+};
+
 static const struct iio_chan_spec meson_sar_adc_iio_channels[] = {
 	MESON_SAR_ADC_CHAN(0),
 	MESON_SAR_ADC_CHAN(1),
@@ -225,28 +247,6 @@ static const struct iio_chan_spec meson_sar_adc_and_temp_iio_channels[] = {
 	MESON_SAR_ADC_TEMP_CHAN(8),
 };
 
-enum meson_sar_adc_avg_mode {
-	NO_AVERAGING = 0x0,
-	MEAN_AVERAGING = 0x1,
-	MEDIAN_AVERAGING = 0x2,
-};
-
-enum meson_sar_adc_num_samples {
-	ONE_SAMPLE = 0x0,
-	TWO_SAMPLES = 0x1,
-	FOUR_SAMPLES = 0x2,
-	EIGHT_SAMPLES = 0x3,
-};
-
-enum meson_sar_adc_chan7_mux_sel {
-	CHAN7_MUX_VSS = 0x0,
-	CHAN7_MUX_VDD_DIV4 = 0x1,
-	CHAN7_MUX_VDD_DIV2 = 0x2,
-	CHAN7_MUX_VDD_MUL3_DIV4 = 0x3,
-	CHAN7_MUX_VDD = 0x4,
-	CHAN7_MUX_CH7_INPUT = 0x7,
-};
-
 struct meson_sar_adc_param {
 	bool					has_bl30_integration;
 	unsigned long				clock_rate;