Add fs_config_files_vendor and fs_config_dirs_vendor to deps

These are required deps of the phony .mk module
`fs_config_*_nonsystem`, which is added to PRODUCT_PACKAGES in
`build/make/target/product/base_vendor.mk`

Test: verified that these files are present in the autogenerated vendor
partition module

Bug: 374371755
Change-Id: I4cd7e6e10994e77ddbb3192e834d45658255ad75
diff --git a/fsgen/filesystem_creator.go b/fsgen/filesystem_creator.go
index fde344b..f37d16d 100644
--- a/fsgen/filesystem_creator.go
+++ b/fsgen/filesystem_creator.go
@@ -130,7 +130,10 @@
 					"public.libraries.android.txt": defaultDepCandidateProps(ctx.Config()),
 					"update_engine_sideload":       defaultDepCandidateProps(ctx.Config()),
 				},
-				"vendor":  newMultilibDeps(),
+				"vendor": &map[string]*depCandidateProps{
+					"fs_config_files_vendor": defaultDepCandidateProps(ctx.Config()),
+					"fs_config_dirs_vendor":  defaultDepCandidateProps(ctx.Config()),
+				},
 				"odm":     newMultilibDeps(),
 				"product": newMultilibDeps(),
 				"system_ext": &map[string]*depCandidateProps{