Copile fix: missing libswscale part of ffmpeg r9322 TARGET_ARCH -> ARCH change.

git-svn-id: file:///var/local/repositories/mplayer/trunk/libswscale@23562 b3059339-0415-0410-9bf9-f77b7e298cf2

Makefile

@@ -12,8 +12,8 @@ OBJS= swscale.o rgb2rgb.o
 OBJS-$(TARGET_ALTIVEC)     +=  yuv2rgb_altivec.o
 OBJS-$(CONFIG_GPL)         +=  yuv2rgb.o
 
-OBJS-$(TARGET_ARCH_BFIN)     +=  yuv2rgb_bfin.o
-ASM_OBJS-$(TARGET_ARCH_BFIN) += internal_bfin.o
+OBJS-$(ARCH_BFIN)          +=  yuv2rgb_bfin.o
+ASM_OBJS-$(ARCH_BFIN)      += internal_bfin.o
 
 HEADERS = swscale.h rgb2rgb.h