tcg: Add comments for all optional instructions not implemented.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
diff --git a/tcg/i386/tcg-target.h b/tcg/i386/tcg-target.h
index 69227c3..f97034c 100644
--- a/tcg/i386/tcg-target.h
+++ b/tcg/i386/tcg-target.h
@@ -45,15 +45,17 @@
 #define TCG_TARGET_CALL_STACK_OFFSET 0
 
 /* optional instructions */
+#define TCG_TARGET_HAS_rot_i32
+#define TCG_TARGET_HAS_ext8s_i32
+#define TCG_TARGET_HAS_ext16s_i32
+#define TCG_TARGET_HAS_ext8u_i32
+#define TCG_TARGET_HAS_ext16u_i32
 #define TCG_TARGET_HAS_bswap16_i32
 #define TCG_TARGET_HAS_bswap32_i32
 #define TCG_TARGET_HAS_neg_i32
 #define TCG_TARGET_HAS_not_i32
-#define TCG_TARGET_HAS_ext8s_i32
-#define TCG_TARGET_HAS_ext16s_i32
-#define TCG_TARGET_HAS_rot_i32
-#define TCG_TARGET_HAS_ext8u_i32
-#define TCG_TARGET_HAS_ext16u_i32
+// #define TCG_TARGET_HAS_andc_i32
+// #define TCG_TARGET_HAS_orc_i32
 
 #define TCG_TARGET_HAS_GUEST_BASE