Revert^2 "rust: Only allow bindgen to produce `rlib`s."

b983c8971bc02c15897c198bca15284579a378ae

Change-Id: Ic82433885f7932be8cfe65433330527214807684
diff --git a/rust/source_provider.go b/rust/source_provider.go
index 7719611..4f8d22b 100644
--- a/rust/source_provider.go
+++ b/rust/source_provider.go
@@ -65,9 +65,12 @@
 	}
 }
 
-func NewSourceProviderModule(hod android.HostOrDeviceSupported, sourceProvider SourceProvider, enableLints bool) *Module {
+func NewSourceProviderModule(hod android.HostOrDeviceSupported, sourceProvider SourceProvider, enableLints bool, rlibOnly bool) *Module {
 	_, library := NewRustLibrary(hod)
 	library.BuildOnlyRust()
+	if rlibOnly {
+		library.BuildOnlyRlib()
+	}
 	library.sourceProvider = sourceProvider
 
 	module := newModule(hod, android.MultilibBoth)