iio: adc: qcom-spmi-rradc: Fix spelling mistake "coherrency" -> "coherency"

There is a spelling mistake in a dev_err message. Fix it.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20220621094736.90436-1-colin.i.king@gmail.comSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/adc/qcom-spmi-rradc.c

@@ -295,7 +295,7 @@ static int rradc_read(struct rradc_chip *chip, u16 addr, __le16 *buf, int len)
 	}
 
 	if (retry_cnt == RR_ADC_COHERENT_CHECK_RETRY)
-		dev_err(chip->dev, "Retry exceeded for coherrency check\n");
+		dev_err(chip->dev, "Retry exceeded for coherency check\n");
 
 	return ret;
 }