MIPS doesn't like unaligned accesses

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@5469 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavcodec/bitstream.h

@@ -135,7 +135,7 @@ typedef struct RL_VLC_ELEM {
     uint8_t run;
 } RL_VLC_ELEM;
 
-#if defined(ARCH_SPARC) || defined(ARCH_ARMV4L)
+#if defined(ARCH_SPARC) || defined(ARCH_ARMV4L) || defined(ARCH_MIPS)
 #define UNALIGNED_STORES_ARE_BAD
 #endif