tilelink: cacheable resource permission now reports whether a address space could possibly be cached, even if no visible adapters make it so

src/main/scala/tilelink/Parameters.scala

@@ -64,7 +64,7 @@ case class TLManagerParameters(
       r = supportsAcquireB || supportsGet,
       w = supportsAcquireT || supportsPutFull,
       x = executable,
-      c = supportsAcquireB))
+      c = regionType >= RegionType.UNCACHED))
   }
 }