Add defaults modules for avb modules

Bug: 302465542
Test: build
Change-Id: I5bb5a0241d40cf142ed8bbefb76bc8a3709c3e34
diff --git a/filesystem/filesystem.go b/filesystem/filesystem.go
index 3d49114..7b207d6 100644
--- a/filesystem/filesystem.go
+++ b/filesystem/filesystem.go
@@ -36,7 +36,9 @@
 	ctx.RegisterModuleType("android_filesystem", filesystemFactory)
 	ctx.RegisterModuleType("android_system_image", systemImageFactory)
 	ctx.RegisterModuleType("avb_add_hash_footer", avbAddHashFooterFactory)
+	ctx.RegisterModuleType("avb_add_hash_footer_defaults", avbAddHashFooterDefaultsFactory)
 	ctx.RegisterModuleType("avb_gen_vbmeta_image", avbGenVbmetaImageFactory)
+	ctx.RegisterModuleType("avb_gen_vbmeta_image_defaults", avbGenVbmetaImageDefaultsFactory)
 }
 
 type filesystem struct {