ril: Add support for imsType parcel member

This is needed for Samsung devices like the Galaxy A5 2017.

Change-Id: I3b89cf8ac232fef5629b439dbf5d2f21bdb264a2
diff --git a/ril/libril/ril_service.cpp b/ril/libril/ril_service.cpp
index d1fa581..f4f06d5 100644
--- a/ril/libril/ril_service.cpp
+++ b/ril/libril/ril_service.cpp
@@ -1948,6 +1948,10 @@
         }
 #endif
 
+#ifdef NEEDS_IMS_TYPE_FIELD
+        iaa.imsType = 0;
+#endif
+
         CALL_ONREQUEST(RIL_REQUEST_SET_INITIAL_ATTACH_APN, &iaa, sizeof(iaa), pRI, mSlotId);
 
         memsetAndFreeStrings(4, iaa.apn, iaa.protocol, iaa.username, iaa.password);