NEON-OBJS should also be cleared for each subdir.

Originally committed as revision 18944 to svn://svn.ffmpeg.org/ffmpeg/trunk

Makefile

@@ -46,7 +46,7 @@ $(PROGS): %$(EXESUF): %_g$(EXESUF)
 	$(STRIP) $@
 
 SUBDIR_VARS := OBJS FFLIBS CLEANFILES DIRS TESTPROGS EXAMPLES \
-               ALTIVEC-OBJS MMX-OBJS YASM-OBJS-FFT YASM-OBJS
+               ALTIVEC-OBJS MMX-OBJS NEON-OBJS YASM-OBJS-FFT YASM-OBJS
 
 define RESET
 $(1) :=