GnatForLEON is no longer there. Use rtems_posix

Demo_MultiPlatform/deploymentview.aadl

@@ -129,7 +129,7 @@ WITH ocarina_processors_x86;
            Deployment::Port_Number => 0;};
       pingee1_obj366 : SYSTEM interfaceview::IV::pingee1
         { Taste::Coordinates => "123 28 167 38" ;};
-      leoncpu_obj135 : PROCESSOR ocarina_processors_leon::leon.rtems
+      leoncpu_obj135 : PROCESSOR ocarina_processors_leon::leon.rtems_posix
         { Taste::Coordinates => "113 14 178 46"; };
       ram_obj223 : MEMORY ram_obj223.others
         { Taste::Coordinates => "115 51 177 67"; };
@@ -209,7 +209,7 @@ WITH ocarina_processors_x86;
            Deployment::Port_Number => 0;};
       pingee2_obj377 : SYSTEM interfaceview::IV::pingee2
         { Taste::Coordinates => "216 25 266 36" ;};
-      leoncpu_obj146 : PROCESSOR ocarina_processors_leon::leon.rtems
+      leoncpu_obj146 : PROCESSOR ocarina_processors_leon::leon.rtems_posix
         { Taste::Coordinates => "209 12 278 51"; };
       ram_obj234 : MEMORY ram_obj234.others
         { Taste::Coordinates => "209 53 277 70"; };