Simplify vendor conditionals

Support vendor conditionals with no Go code.

Test: TestSoongConfigModule
Change-Id: I42546e7f17324921ada80f4d8e1cd399830f8dfc
diff --git a/android/hooks.go b/android/hooks.go
index 04ba69e..e8cd81b 100644
--- a/android/hooks.go
+++ b/android/hooks.go
@@ -34,6 +34,9 @@
 	AppendProperties(...interface{})
 	PrependProperties(...interface{})
 	CreateModule(ModuleFactory, ...interface{}) Module
+
+	registerScopedModuleType(name string, factory blueprint.ModuleFactory)
+	moduleFactories() map[string]blueprint.ModuleFactory
 }
 
 func AddLoadHook(m blueprint.Module, hook func(LoadHookContext)) {
@@ -52,6 +55,10 @@
 	module Module
 }
 
+func (l *loadHookContext) moduleFactories() map[string]blueprint.ModuleFactory {
+	return l.bp.ModuleFactories()
+}
+
 func (l *loadHookContext) AppendProperties(props ...interface{}) {
 	for _, p := range props {
 		err := proptools.AppendMatchingProperties(l.Module().base().customizableProperties,
@@ -101,6 +108,10 @@
 	return module
 }
 
+func (l *loadHookContext) registerScopedModuleType(name string, factory blueprint.ModuleFactory) {
+	l.bp.RegisterScopedModuleType(name, factory)
+}
+
 type InstallHookContext interface {
 	ModuleContext
 	Path() InstallPath