Add <partition>/radio support to fsgen

Test: m on qualcomm device with
  PRODUCT_COPY_FILES += \
    qcril.db:$(TARGET_COPY_OUT_VENDOR)/radio/qcril_database/qcril.db
Change-Id: I2fa887eef21a8d554f27add6b63da31b53931003
diff --git a/etc/prebuilt_etc.go b/etc/prebuilt_etc.go
index fad8f07..a54b8bd 100644
--- a/etc/prebuilt_etc.go
+++ b/etc/prebuilt_etc.go
@@ -73,6 +73,7 @@
 	ctx.RegisterModuleType("prebuilt_bin", PrebuiltBinaryFactory)
 	ctx.RegisterModuleType("prebuilt_wallpaper", PrebuiltWallpaperFactory)
 	ctx.RegisterModuleType("prebuilt_priv_app", PrebuiltPrivAppFactory)
+	ctx.RegisterModuleType("prebuilt_radio", PrebuiltRadioFactory)
 	ctx.RegisterModuleType("prebuilt_rfs", PrebuiltRfsFactory)
 	ctx.RegisterModuleType("prebuilt_framework", PrebuiltFrameworkFactory)
 	ctx.RegisterModuleType("prebuilt_res", PrebuiltResFactory)
@@ -921,6 +922,16 @@
 	return module
 }
 
+// prebuilt_radio installs files in <partition>/radio directory.
+func PrebuiltRadioFactory() android.Module {
+	module := &PrebuiltEtc{}
+	InitPrebuiltEtcModule(module, "radio")
+	// This module is device-only
+	android.InitAndroidArchModule(module, android.DeviceSupported, android.MultilibCommon)
+	android.InitDefaultableModule(module)
+	return module
+}
+
 // prebuilt_rfs installs files in <partition>/rfs directory.
 func PrebuiltRfsFactory() android.Module {
 	module := &PrebuiltEtc{}