vc-1: Add platform-specific start code search routine to VC1DSPContext.

Initialise VC1DSPContext for parser as well as for decoder.
Note, the VC-1 code doesn't actually use the function pointer yet.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

libavcodec/arm/vc1dsp_init_arm.c

@@ -20,6 +20,7 @@
 
 #include "libavutil/attributes.h"
 #include "libavutil/arm/cpu.h"
+#include "libavcodec/arm/startcode.h"
 #include "libavcodec/vc1dsp.h"
 #include "vc1dsp.h"
 
@@ -27,6 +28,8 @@ av_cold void ff_vc1dsp_init_arm(VC1DSPContext *dsp)
 {
     int cpu_flags = av_get_cpu_flags();
 
+    if (have_setend(cpu_flags))
+        dsp->startcode_find_candidate = ff_startcode_find_candidate_armv6;
     if (have_neon(cpu_flags))
         ff_vc1dsp_init_neon(dsp);
 }