Add vi:u and vi:s to service list and fix the result parcel type of OpenLayer

vi:u is used by user applications and games and it has the same api as
vi:m.

app/src/main/cpp/skyline/services/base_service.h

@@ -93,6 +93,8 @@ namespace skyline::service {
         {"nvdrv:s", Service::nvdrv_INvDrvServices},
         {"nvdrv:t", Service::nvdrv_INvDrvServices},
         {"vi:m", Service::visrv_IManagerRootService},
+        {"vi:u", Service::visrv_IManagerRootService},
+        {"vi:s", Service::visrv_IManagerRootService},
         {"pl:u", Service::pl_IPlatformServiceManager},
         {"aoc:u", Service::aocsrv_IAddOnContentManager},
         {"pctl", Service::pctl_IParentalControlServiceFactory},

app/src/main/cpp/skyline/services/visrv/IApplicationDisplayService.cpp

@@ -65,7 +65,7 @@ namespace skyline::service::visrv {
 
         Parcel parcel(state);
         LayerParcel data{
-            .type = 0x20,
+            .type = 0x2,
             .pid = 0,
             .bufferId = 0, // As we only have one layer and buffer
             .string = "dispdrv"