Cleanup: blenkernel proper header inclusion for BKE_ocean.h

BKE_ocean.h uses the bool type without including stdbool.h
counting on someone else including that before it.

With D6811 enabling automatic sorting of the includes
this can no longer be counted on. This changes includes
stdbool.h in BKE_ocean.h so it can build without being
depended on others including the right headers before it.

source/blender/blenkernel/BKE_ocean.h

@@ -17,6 +17,8 @@
 #ifndef __BKE_OCEAN_H__
 #define __BKE_OCEAN_H__
 
+#include <stdbool.h>
+
 /** \file
  * \ingroup bli
  */