Add IApnSourceService.aidl

This service is bound to by TelephonyProvider on devices where we don't
use the apns-conf.xml file.

Bug: 37283190
Test: manual
Change-Id: I16da1c5acc5ba1fe0237cc0d37c73d831c2d1508
diff --git a/Android.mk b/Android.mk
index 623b522..d1356e2 100644
--- a/Android.mk
+++ b/Android.mk
@@ -529,6 +529,7 @@
         telephony/java/com/android/ims/internal/uce/presence/IPresenceService.aidl \
         telephony/java/com/android/ims/internal/uce/presence/IPresenceListener.aidl \
 	telephony/java/com/android/ims/ImsConfigListener.aidl \
+	telephony/java/com/android/internal/telephony/IApnSourceService.aidl \
 	telephony/java/com/android/internal/telephony/ICarrierConfigLoader.aidl \
 	telephony/java/com/android/internal/telephony/IMms.aidl \
 	telephony/java/com/android/internal/telephony/IOnSubscriptionsChangedListener.aidl \