avcodec/x86/hevcdsp_init: fix build on 32bit

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/x86/hevcdsp_init.c

@@ -28,6 +28,7 @@
 #include "libavcodec/hevcdsp.h"
 #include "libavcodec/x86/hevcdsp.h"
 
+#if ARCH_X86_64
 
 #define mc_rep_func(name, bitd, step, W) \
 void ff_hevc_put_hevc_##name##W##_##bitd##_sse4(int16_t *_dst, ptrdiff_t dststride,                             \
@@ -316,6 +317,8 @@ mc_bi_w_funcs(qpel_h, 10);
 mc_bi_w_funcs(qpel_v, 10);
 mc_bi_w_funcs(qpel_hv, 10);
 
+#endif //ARCH_X86_64
+
 
 #define EPEL_LINKS(pointer, my, mx, fname, bitd)           \
         PEL_LINK(pointer, 1, my , mx , fname##4 ,  bitd ); \