iio: imu: inv_icm42600: switch timestamp type from int64_t __aligned(8) to aligned_s64

The vast majority of IIO drivers use aligned_s64 for the type of the
timestamp field.  It is not a bug to use int64_t and until this series
iio_push_to_buffers_with_timestamp() took and int64_t timestamp, it
is inconsistent.  This change is to remove that inconsistency and
ensure there is one obvious choice for future drivers.

Acked-by: Jean-Baptiste Maneyrol <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jonathan Cameron <[email protected]>

Author: jic23

drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c

@@ -178,7 +178,7 @@ static const struct iio_chan_spec inv_icm42600_accel_channels[] = {
 struct inv_icm42600_accel_buffer {
 	struct inv_icm42600_fifo_sensor_data accel;
 	int16_t temp;
-	int64_t timestamp __aligned(8);
+	aligned_s64 timestamp;
 };
 
 #define INV_ICM42600_SCAN_MASK_ACCEL_3AXIS				\

drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c

@@ -78,7 +78,7 @@ static const struct iio_chan_spec inv_icm42600_gyro_channels[] = {
 struct inv_icm42600_gyro_buffer {
 	struct inv_icm42600_fifo_sensor_data gyro;
 	int16_t temp;
-	int64_t timestamp __aligned(8);
+	aligned_s64 timestamp;
 };
 
 #define INV_ICM42600_SCAN_MASK_GYRO_3AXIS				\