iio: adc: ad7944: add namespace to T_QUIET_NS

Add AD7944_ namespace to T_QUIET_NS. This is the preferred style. This
way the bad style won't be copied when we add more T_ macros.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20241009-iio-adc-ad7944-add-namespace-to-t_quiet_ns-v1-1-a216357a065c@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Author: dlech

drivers/iio/adc/ad7944.c

@@ -80,7 +80,7 @@ struct ad7944_adc {
 };
 
 /* quite time before CNV rising edge */
-#define T_QUIET_NS	20
+#define AD7944_T_QUIET_NS	20
 
 static const struct ad7944_timing_spec ad7944_timing_spec = {
 	.conv_ns = 420,
@@ -150,7 +150,7 @@ static int ad7944_3wire_cs_mode_init_msg(struct device *dev, struct ad7944_adc *
 	 * CS is tied to CNV and we need a low to high transition to start the
 	 * conversion, so place CNV low for t_QUIET to prepare for this.
 	 */
-	xfers[0].delay.value = T_QUIET_NS;
+	xfers[0].delay.value = AD7944_T_QUIET_NS;
 	xfers[0].delay.unit = SPI_DELAY_UNIT_NSECS;
 
 	/*