iio: accel: kionix-kx022a: Apply approximate iwyu principles to includes

iio: accel: kionix-kx022a: Apply approximate iwyu principles to includes

Motivated by the W=1 warning about export.h that was introduced this cycle
this is an attempt to apply an approximation of the principles of including
whatever is used in the file directly.

Helped by the include-what-you-use tool.

Reasoning:
- Drop linux/moduleparam.h as completely unused.
- linux/array_size.h for ARRAY_SIZE()
- linux/bitmap.h for for_each_set_bit
- linux/errno.h for error codes.
- linux/export.h for EXPORT_SYMBOL*()
- linux/math64.h for do_div - alternative would be asm/div64.h
- linux/minmax.h for min()
- linux/sysfs.h for sysfs_emit()
- linux/time64.h for USEC_PER_MSEC
- linux/iio/buffer.h for iio_push_to_buffers_with_timestamp()
- asm/byteorder.h for le16_to_cpu()

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20250629183649.184479-1-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>