Generate tidy-* rules unless tidy is disabled

* make tidy-soong_subset, or make tidy-<any_directory>,
  should trigger the same clang-tidy compilations
  with or without global WITH_TIDY=1.
* Normal make should not trigger clang-tidy compilations
  unless global WITH_TIDY=1 or a module has set tidy:true.

Bug: 213918926
Test: NINJA_ARGS="-n" make tidy-soong_subset
Test: NINJA_ARGS="-n" make <some-library>
Change-Id: Iafffd3894abe137c9584c2c01830898422f9a677
diff --git a/cc/binary.go b/cc/binary.go
index b59e762..ee3de3f 100644
--- a/cc/binary.go
+++ b/cc/binary.go
@@ -427,7 +427,7 @@
 		linkerDeps = append(linkerDeps, ndkSharedLibDeps(ctx)...)
 	}
 
-	validations = append(validations, objs.tidyFiles...)
+	validations = append(validations, objs.tidyDepFiles...)
 	linkerDeps = append(linkerDeps, flags.LdFlagsDeps...)
 
 	// Register link action.