staging: iio: Replace a bit shift by a use of BIT.

This patch replaces bit shifting on 1 with the BIT(x) macro.
This was done with coccinelle:
@@
constant c;
@@

-1 << c
+BIT(c)
Signed-off-by: Arushi Singhal <arushisinghal19971997@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

drivers/staging/iio/cdc/ad7150.c

@@ -232,7 +232,7 @@ static int ad7150_write_event_config(struct iio_dev *indio_dev,
 	if (ret < 0)
 		goto error_ret;
 
-	cfg = ret & ~((0x03 << 5) | (0x1 << 7));
+	cfg = ret & ~((0x03 << 5) | BIT(7));
 
 	switch (type) {
 	case IIO_EV_TYPE_MAG_ADAPTIVE:

drivers/staging/iio/cdc/ad7746.c

@@ -45,10 +45,10 @@
 #define AD7746_STATUS_RDYCAP		BIT(0)
 
 /* Capacitive Channel Setup Register Bit Designations (AD7746_REG_CAP_SETUP) */
-#define AD7746_CAPSETUP_CAPEN		(1 << 7)
-#define AD7746_CAPSETUP_CIN2		(1 << 6) /* AD7746 only */
-#define AD7746_CAPSETUP_CAPDIFF		(1 << 5)
-#define AD7746_CAPSETUP_CACHOP		(1 << 0)
+#define AD7746_CAPSETUP_CAPEN		(BIT(7))
+#define AD7746_CAPSETUP_CIN2		(BIT(6)) /* AD7746 only */
+#define AD7746_CAPSETUP_CAPDIFF		(BIT(5))
+#define AD7746_CAPSETUP_CACHOP		(BIT(0))
 
 /* Voltage/Temperature Setup Register Bit Designations (AD7746_REG_VT_SETUP) */
 #define AD7746_VTSETUP_VTEN		(1 << 7)
@@ -56,9 +56,9 @@
 #define AD7746_VTSETUP_VTMD_EXT_TEMP	(1 << 5)
 #define AD7746_VTSETUP_VTMD_VDD_MON	(2 << 5)
 #define AD7746_VTSETUP_VTMD_EXT_VIN	(3 << 5)
-#define AD7746_VTSETUP_EXTREF		(1 << 4)
-#define AD7746_VTSETUP_VTSHORT		(1 << 1)
-#define AD7746_VTSETUP_VTCHOP		(1 << 0)
+#define AD7746_VTSETUP_EXTREF		(BIT(4))
+#define AD7746_VTSETUP_VTSHORT		(BIT(1))
+#define AD7746_VTSETUP_VTCHOP		(BIT(0))
 
 /* Excitation Setup Register Bit Designations (AD7746_REG_EXC_SETUP) */
 #define AD7746_EXCSETUP_CLKCTRL		BIT(7)
@@ -82,7 +82,7 @@
 #define AD7746_CONF_MODE_GAIN_CAL	(6 << 0)
 
 /* CAPDAC Register Bit Designations (AD7746_REG_CAPDACx) */
-#define AD7746_CAPDAC_DACEN		(1 << 7)
+#define AD7746_CAPDAC_DACEN		(BIT(7))
 #define AD7746_CAPDAC_DACP(x)		((x) & 0x7F)
 
 /*