iio: chemical: Use aligned_s64 instead of open coding alignment.

Use this new type to both slightly simplify the code and avoid
confusing static analysis tools. Mostly this series is about consistency
to avoid this code pattern getting copied into more drivers.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20241215182912.481706-13-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/chemical/ccs811.c

@@ -81,7 +81,7 @@ struct ccs811_data {
 	/* Ensures correct alignment of timestamp if present */
 	struct {
 		s16 channels[2];
-		s64 ts __aligned(8);
+		aligned_s64 ts;
 	} scan;
 };
 

drivers/iio/chemical/ens160_core.c

@@ -60,7 +60,7 @@ struct ens160_data {
 	struct mutex mutex;
 	struct {
 		__le16 chans[2];
-		s64 timestamp __aligned(8);
+		aligned_s64 timestamp;
 	} scan __aligned(IIO_DMA_MINALIGN);
 	u8 fw_version[3];
 	__le16 buf;

drivers/iio/chemical/scd30_core.c

@@ -594,7 +594,7 @@ static irqreturn_t scd30_trigger_handler(int irq, void *p)
 	struct scd30_state *state = iio_priv(indio_dev);
 	struct {
 		int data[SCD30_MEAS_COUNT];
-		s64 ts __aligned(8);
+		aligned_s64 ts;
 	} scan;
 	int ret;