tcg: Make ARRAY_SIZE(tcg_op_defs) globally available

tcg_op_defs was already a global array.

The tci disassembler also needs ARRAY_SIZE(tcg_op_defs),
so add a new global constant with this value.

Signed-off-by: Stefan Weil <sw@weilnetz.de>

tcg/tcg.c

@@ -89,6 +89,7 @@ TCGOpDef tcg_op_defs[] = {
 #include "tcg-opc.h"
 #undef DEF
 };
+const size_t tcg_op_defs_max = ARRAY_SIZE(tcg_op_defs);
 
 static TCGRegSet tcg_target_available_regs[2];
 static TCGRegSet tcg_target_call_clobber_regs;

tcg/tcg.h

@@ -525,6 +525,7 @@ typedef struct TCGOpDef {
 } TCGOpDef;
 
 extern TCGOpDef tcg_op_defs[];
+extern const size_t tcg_op_defs_max;
 
 typedef struct TCGTargetOpDef {
     TCGOpcode op;