Move VpnDialogs into core.mk.

It is required by the APIs of user space VPN.

Bug: 5495078
Change-Id: I30c309c4f6467a35fca95e76f666799816874752
diff --git a/target/product/core.mk b/target/product/core.mk
index aac703e..0f298ac 100644
--- a/target/product/core.mk
+++ b/target/product/core.mk
@@ -41,6 +41,7 @@
     SharedStorageBackup \
     TelephonyProvider \
     UserDictionaryProvider \
+    VpnDialogs \
     apache-xml \
     bouncycastle \
     bu \
diff --git a/target/product/generic_no_telephony.mk b/target/product/generic_no_telephony.mk
index d165b0f..0d87fc3 100644
--- a/target/product/generic_no_telephony.mk
+++ b/target/product/generic_no_telephony.mk
@@ -43,7 +43,6 @@
     Updater \
     CalendarProvider \
     SyncProvider \
-    VpnDialogs \
     bluetooth-health \
     hostapd \
     wpa_supplicant.conf