Mixed C99 and kernel types use is getting ugly. Prefer kernel types.

sed -i 's/\buint\(8\|16\|32\|64\)_t\b/u\1/g'
Acked-by: NZhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: NJani Nikula <jani.nikula@intel.com>
Signed-off-by: NZhenyu Wang <zhenyuw@linux.intel.com>