disable mixvbp optimization since it can not apply to h264 decoder

BZ: 191348

disable mixvbp optimization since it can not apply to h264 decoder
h264 has emulation data, so the prefetch optimization can not apply to AVC parser,
it may lead wrong calculation for slice byteoffset and bitoffset

Change-Id: I88ede7a16a00b755170c90801173c1074e5cef86
Signed-off-by: ywan171 <yi.a.wang@intel.com>
diff --git a/mixvbp/vbp_manager/include/viddec_pm_utils_bstream.h b/mixvbp/vbp_manager/include/viddec_pm_utils_bstream.h
index 37e90cd..7796798 100755
--- a/mixvbp/vbp_manager/include/viddec_pm_utils_bstream.h
+++ b/mixvbp/vbp_manager/include/viddec_pm_utils_bstream.h
@@ -7,7 +7,7 @@
 #define SCRATCH_SIZE 20
 #define MIN_DATA     8
 
-#define PARSER_OPT /* parser optimization*/
+//#define PARSER_OPT /* parser optimization*/
 
 typedef struct
 {