staging: iio: adc: remove multiple blank lines

Remove multiple blank lines since there is no practical reason
to have it

Signed-off-by: Ioana Ciornei <[e-mail]>
Reviewed-by: Daniel Baluta <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/iio/adc/ad7192.c

···
 #define AD7192_CLK_INT_CO		3 /* Internal 4.92 MHz Clock available
 					   * at the MCLK2 pin */
 
-
 /* Configuration Register Bit Designations (AD7192_REG_CONF) */
 
 #define AD7192_CONF_CHOP	BIT(23) /* CHOP enable */

drivers/staging/iio/adc/ad7280a.c

···
 		ad7280_write_channel_config,
 		AD7280A_AUX_ADC_OVERVOLTAGE);
 
-
 static struct attribute *ad7280_event_attributes[] = {
 	&iio_dev_attr_in_thresh_low_value.dev_attr.attr,
 	&iio_dev_attr_in_thresh_high_value.dev_attr.attr,

drivers/staging/iio/adc/ad7780.c

···
 	indio_dev->info = &ad7780_info;
 
 	if (pdata && gpio_is_valid(pdata->gpio_pdrst)) {
-
 		ret = devm_gpio_request_one(&spi->dev,
 					    pdata->gpio_pdrst,
 					    GPIOF_OUT_INIT_LOW,

drivers/staging/iio/adc/ad7816.c

···
 #define AD7816_TEMP_FLOAT_OFFSET	2
 #define AD7816_TEMP_FLOAT_MASK		0x3
 
-
 /*
  * struct ad7816_chip_info - chip specific information
  */
···
 		return ret;
 	}
 	gpio_set_value(chip->rdwr_pin, 1);
-
 
 	if (chip->mode == AD7816_PD) { /* operating mode 2 */
 		gpio_set_value(chip->convert_pin, 1);
···
 		ad7816_show_channel,
 		ad7816_store_channel,
 		0);
-
 
 static ssize_t ad7816_show_value(struct device *dev,
 				 struct device_attribute *attr,