iio: adc: mxs-lradc: Prefer using the BIT macro

Replaces bit shifting on 1 with the BIT(x) macro
Signed-off-by: Nizam Haider <nijamh@cdac.in>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

drivers/staging/iio/adc/mxs-lradc.c

@@ -324,7 +324,7 @@ struct mxs_lradc {
 #define	LRADC_DELAY_TRIGGER(x) \
 				(((x) << LRADC_DELAY_TRIGGER_LRADCS_OFFSET) & \
 				LRADC_DELAY_TRIGGER_LRADCS_MASK)
-#define	LRADC_DELAY_KICK			(1 << 20)
+#define	LRADC_DELAY_KICK			BIT(20)
 #define	LRADC_DELAY_TRIGGER_DELAYS_MASK		(0xf << 16)
 #define	LRADC_DELAY_TRIGGER_DELAYS_OFFSET	16
 #define	LRADC_DELAY_TRIGGER_DELAYS(x) \