target/m68k: Use tcg_constant_i32 in gen_ea_mode

Return a constant for an immediate input.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/m68k/translate.c

@@ -916,7 +916,7 @@ static TCGv gen_ea_mode(CPUM68KState *env, DisasContext *s, int mode, int reg0,
             default:
                 g_assert_not_reached();
             }
-            return tcg_const_i32(offset);
+            return tcg_constant_i32(offset);
         default:
             return NULL_QREG;
         }