Handle partial link of a single object with a linker script.

Fixes: 142931094
Test: m bssl with -DNO_ASM and all assembly sources commented out
Change-Id: Id56d325fbf1d4a0777944512a88f3c086e930af7

cc/object.go

@@ -104,7 +104,7 @@ func (object *objectLinker) link(ctx ModuleContext,
 	var outputFile android.Path
 	builderFlags := flagsToBuilderFlags(flags)
 
-	if len(objs.objFiles) == 1 {
+	if len(objs.objFiles) == 1 && String(object.Properties.Linker_script) == "" {
 		outputFile = objs.objFiles[0]
 
 		if String(object.Properties.Prefix_symbols) != "" {