Core/SAI: Extended SMART_TARGET_VEHICLE_PASSENGER to allow specifying

seat mask instead of single seat index (can now target all passengers)

src/server/game/AI/SmartScripts/SmartScriptMgr.h

@@ -1217,7 +1217,7 @@ enum SMARTAI_TARGETS
     SMART_TARGET_CLOSEST_FRIENDLY               = 26,   // maxDist, playerOnly
     SMART_TARGET_LOOT_RECIPIENTS                = 27,   // all players that have tagged this creature (for kill credit)
     SMART_TARGET_FARTHEST                       = 28,   // maxDist, playerOnly, isInLos
-    SMART_TARGET_VEHICLE_ACCESSORY              = 29,   // seat number (vehicle can target it's own accessory)
+    SMART_TARGET_VEHICLE_PASSENGER              = 29,   // seatMask (0 - all seats)
 
     SMART_TARGET_END                            = 30
 };
@@ -1345,7 +1345,7 @@ struct SmartTarget
 
         struct
         {
-            uint32 seat;
+            uint32 seatMask;
         } vehicle;
     };
 };