Move libril to the vendor partition.

This module should not be built on the system partition.

Test: old libril instances removed from out by CleanSpec.mk
Test: phone call on internal marlin
Bug: 33241851
Change-Id: I27cbe60831c838a5d6fb75a5a9c32af0554fc5bb
diff --git a/libril/Android.mk b/libril/Android.mk
index 8d7fe8d..952e6be 100644
--- a/libril/Android.mk
+++ b/libril/Android.mk
@@ -3,6 +3,8 @@
 LOCAL_PATH:= $(call my-dir)
 include $(CLEAR_VARS)
 
+LOCAL_VENDOR_MODULE := true
+
 LOCAL_SRC_FILES:= \
     ril.cpp \
     ril_event.cpp\