system_prop: Add ro.telephony.ril.config property
diff --git a/system_prop.mk b/system_prop.mk
index 8943e6a..9c072f0 100644
--- a/system_prop.mk
+++ b/system_prop.mk
@@ -9,7 +9,8 @@
 
 # RIL
 PRODUCT_DEFAULT_PROPERTY_OVERRIDES += \
-	telephony.lteOnCdmaDevice=0 \
 	ro.multisim.simslotcount=2 \
+	ro.telephony.ril.config=simactivation \
+	telephony.lteOnCdmaDevice=0 \
 	persist.radio.multisim.config=dsds \
 	rild.libpath2=/system/lib/libsec-ril-dsds.so