kern/pm: support for 5.x under mesosphere

libraries/libvapours/include/vapours/svc/svc_types_common.hpp

@@ -173,6 +173,9 @@ namespace ams::svc {
         SystemInfoType_TotalPhysicalMemorySize  = 0,
         SystemInfoType_UsedPhysicalMemorySize   = 1,
         SystemInfoType_InitialProcessIdRange    = 2,
+
+        /* NOTE: This is potentially temporary, and highly subject to change. */
+        SystemInfoType_IsMesosphere = 0xF0000000,
     };
 
     enum InitialProcessIdRangeInfo : u64 {