ART: Fix instruction flags of kMirOpCheck and kMirOpCheckPart2

Since they are just wrappers for correct modeling, it was believed
that these instructions do not need flags. However, the flags
are needed to correctly reflect their semantic behavior in a manner
consistent with all other instructions.

Also, missing flags for new extended instructions have also been added.

Change-Id: I2282eebf4b9c82b82e26722914645fcc0be49c82
Signed-off-by: Udayan Banerji <udayan.banerji@intel.com>
Signed-off-by: Razvan A Lupusoru <razvan.a.lupusoru@intel.com>