exec-all.h: increase OPC_BUF_SIZE

Increase OPC_BUF_SIZE to compensate the MAX_OP_PER_INSTR's increase.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

exec-all.h

@@ -37,7 +37,7 @@ typedef struct TranslationBlock TranslationBlock;
 #define MAX_OP_PER_INSTR 96
 /* A Call op needs up to 6 + 2N parameters (N = number of arguments).  */
 #define MAX_OPC_PARAM 10
-#define OPC_BUF_SIZE 512
+#define OPC_BUF_SIZE 640
 #define OPC_MAX_SIZE (OPC_BUF_SIZE - MAX_OP_PER_INSTR)
 
 /* Maximum size a TCG op can expand to.  This is complicated because a