lineage: Move to Google's method of defining system default props

PRODUCT_SYSTEM_DEFAULT_PROPERTIES can now be used to define system default
properties which should be installed in system partition.

Those props are stored in /system/etc/prop.default.

Change-Id: I6cb0e28a7599b010b389cc541015a37010a00f4b
diff --git a/config/telephony.mk b/config/telephony.mk
index 5c74c4c..5f23cc4 100644
--- a/config/telephony.mk
+++ b/config/telephony.mk
@@ -13,10 +13,10 @@
     CellBroadcastReceiver
 
 # Default ringtone
-PRODUCT_GENERIC_PROPERTIES += \
+PRODUCT_SYSTEM_DEFAULT_PROPERTIES += \
     ro.config.ringtone=Orion.ogg
 
 # Tethering - allow without requiring a provisioning app
 # (for devices that check this)
-PRODUCT_GENERIC_PROPERTIES += \
+PRODUCT_SYSTEM_DEFAULT_PROPERTIES += \
     net.tethering.noprovisioning=true