Move dumpOatRules to platform_bootclasspath

Bug: 177892522
Test: m oat-dump-boot
      - test output to make sure that this change does not change the
        generated files, at least no more than no changes do as the
	output from this rule is not deterministic. See b/186459873.

Change-Id: Ib2b4203d9bb1fd0ee9443aee4e58b54b38b491cf

java/dexpreopt_bootjars.go

@@ -438,8 +438,6 @@ func (d *dexpreoptBootJars) GenerateSingletonBuildActions(ctx android.SingletonC
 	d.otherImages = append(d.otherImages, buildBootImage(ctx, artBootImageConfig(ctx), profile))
 
 	copyUpdatableBootJars(ctx)
-
-	dumpOatRules(ctx, d.defaultBootImage)
 }
 
 // shouldBuildBootImages determines whether boot images should be built.
@@ -918,7 +916,7 @@ func generateUpdatableBcpPackagesRule(ctx android.ModuleContext, image *bootImag
 	return updatableBcpPackages
 }
 
-func dumpOatRules(ctx android.SingletonContext, image *bootImageConfig) {
+func dumpOatRules(ctx android.ModuleContext, image *bootImageConfig) {
 	var allPhonies android.Paths
 	for _, image := range image.variants {
 		arch := image.target.Arch.ArchType
@@ -959,7 +957,6 @@ func dumpOatRules(ctx android.SingletonContext, image *bootImageConfig) {
 		Inputs:      allPhonies,
 		Description: "dump-oat-boot",
 	})
-
 }
 
 func writeGlobalConfigForMake(ctx android.SingletonContext, path android.WritablePath) {

java/platform_bootclasspath.go

@@ -328,4 +328,6 @@ func (b *platformBootclasspathModule) generateBootImageBuildActions(ctx android.
 
 	// Generate the updatable bootclasspath packages rule.
 	generateUpdatableBcpPackagesRule(ctx, imageConfig, updatableModules)
+
+	dumpOatRules(ctx, imageConfig)
 }