Allow other module types in androidx

1. Update pom2bp to support "host_support" device module.
2. Allow other module type in support library

(The intention is to support the room annotation processor)

Test: m

Bug: 137918883

Change-Id: I9a8fbcff903cc395d5dc38430774202ce389d6bc

java/support_libraries.go

@@ -52,8 +52,6 @@ func supportLibrariesMakeVarsProvider(ctx android.MakeVarsContext) {
 			supportAars = append(supportAars, name)
 		case *Library, *Import:
 			supportJars = append(supportJars, name)
-		default:
-			ctx.ModuleErrorf(module, "unknown module type %t", module)
 		}
 	})