Pass correct CPU flags to compilation of sparc/simple_idct_vis.o.

based on a patch by Denes Balatoni, dbalatoni interware hu

Originally committed as revision 10486 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/Makefile

@@ -381,7 +381,7 @@ ASM_OBJS-$(HAVE_ARMV6)                 += armv4l/simple_idct_armv6.o \
 OBJS-$(ARCH_SPARC)                     += sparc/dsputil_vis.o \
                                           sparc/simple_idct_vis.o \
 
-sparc/dsputil_vis.o: CFLAGS += -mcpu=ultrasparc -mtune=ultrasparc
+sparc/dsputil_vis.o sparc/simple_idct_vis.o: CFLAGS += -mcpu=ultrasparc -mtune=ultrasparc
 
 OBJS-$(HAVE_MLIB)                      += mlib/dsputil_mlib.o \