Add header declarations for mmx/sse constants missing them

Originally committed as revision 24381 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/x86/dsputil_mmx.h

@@ -38,10 +38,14 @@ extern const xmm_reg  ff_pw_5;
 extern const xmm_reg  ff_pw_8;
 extern const uint64_t ff_pw_15;
 extern const xmm_reg  ff_pw_16;
+extern const xmm_reg  ff_pw_18;
 extern const uint64_t ff_pw_20;
+extern const xmm_reg  ff_pw_27;
 extern const xmm_reg  ff_pw_28;
 extern const xmm_reg  ff_pw_32;
 extern const uint64_t ff_pw_42;
+extern const uint64_t ff_pw_53;
+extern const xmm_reg  ff_pw_63;
 extern const xmm_reg  ff_pw_64;
 extern const uint64_t ff_pw_96;
 extern const uint64_t ff_pw_128;
@@ -54,7 +58,9 @@ extern const uint64_t ff_pb_1F;
 extern const uint64_t ff_pb_3F;
 extern const uint64_t ff_pb_81;
 extern const uint64_t ff_pb_A1;
+extern const xmm_reg  ff_pb_F8;
 extern const uint64_t ff_pb_FC;
+extern const xmm_reg  ff_pb_FE;
 
 extern const double ff_pd_1[2];
 extern const double ff_pd_2[2];