Use TARGET_ARMV6 variable instead of HAVE_ARMV6 for consistency.

Originally committed as revision 9020 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/Makefile

@@ -360,7 +360,7 @@ OBJS-$(TARGET_IWMMXT)                  += armv4l/dsputil_iwmmxt.o   \
 ASM_OBJS-$(TARGET_ARMV5TE)             += armv4l/simple_idct_armv5te.o \
                                           armv4l/mpegvideo_armv5te.o \
 
-ASM_OBJS-$(HAVE_ARMV6)                 += armv4l/simple_idct_armv6.o
+ASM_OBJS-$(TARGET_ARMV6)               += armv4l/simple_idct_armv6.o \
 
 OBJS-$(TARGET_ARCH_SPARC)              += sparc/dsputil_vis.o \