tcg: Add write_aofs to GVecGen3i

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

include/tcg/tcg-op-gvec-common.h

@@ -183,6 +183,8 @@ typedef struct {
     bool prefer_i64;
     /* Load dest as a 3rd source operand.  */
     bool load_dest;
+    /* Write aofs as a 2nd dest operand.  */
+    bool write_aofs;
 } GVecGen3i;
 
 typedef struct {