Add vintf_fragments.

Bug: 66917623
Test: fragments are loaded in the right place
Test: boot device which is depending on fragments
Test: androidmk file which uses LOCAL_VINTF_FRAGMENTS properly
    converted
Change-Id: I366b731cf8d5ecf51851866f441ff1c517da75cf
diff --git a/android/module.go b/android/module.go
index 1e54470..a011f57 100644
--- a/android/module.go
+++ b/android/module.go
@@ -242,6 +242,9 @@
 	// init.rc files to be installed if this module is installed
 	Init_rc []string
 
+	// VINTF manifest fragments to be installed if this module is installed
+	Vintf_fragments []string
+
 	// names of other modules to install if this module is installed
 	Required []string `android:"arch_variant"`