Make common dependencies of lint use restat

Use restat for the api_versions.xml and annotations.zip dependencies
of lint so that frameworks/base changes don't always result in
rerunning lint on every module.

Bug: 181681346
Test: m lint-check
Change-Id: Ic6a540b41cf79b21441311a8baefe528a3d90d8b
diff --git a/java/lint.go b/java/lint.go
index af83664..12e4129 100644
--- a/java/lint.go
+++ b/java/lint.go
@@ -437,13 +437,13 @@
 	}
 
 	ctx.Build(pctx, android.BuildParams{
-		Rule:   android.Cp,
+		Rule:   android.CpIfChanged,
 		Input:  android.OutputFileForModule(ctx, frameworkDocStubs, ".annotations.zip"),
 		Output: copiedAnnotationsZipPath(ctx),
 	})
 
 	ctx.Build(pctx, android.BuildParams{
-		Rule:   android.Cp,
+		Rule:   android.CpIfChanged,
 		Input:  android.OutputFileForModule(ctx, frameworkDocStubs, ".api_versions.xml"),
 		Output: copiedAPIVersionsXmlPath(ctx),
 	})