Fix inconsistent tab/space usage and bring function definitions
into a single-line format, matching kernel coding style.
Signed-off-by: LiangCheng Wang <zaq14760@gmail.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>