Fix build error after DNA defaults changing

dna_type_offsets.h must be generated before we use it in blenkernel,
similar to what we already do for blenloader.

source/blender/blenkernel/CMakeLists.txt

@@ -625,3 +625,6 @@ endif()
 #endif()
 
 blender_add_lib(bf_blenkernel "${SRC}" "${INC}" "${INC_SYS}" "${LIB}")
+
+# Needed so we can use dna_type_offsets.h for defaults initialization.
+add_dependencies(bf_blenkernel bf_dna)