Set ro.telephony.call_ring.multipe to false

Bug: 7173414
Change-Id: I15d508ecb496a6bdde8fa9b49a6723333683b40e
diff --git a/device.mk b/device.mk
index 7b211f4..a0fb5a4 100644
--- a/device.mk
+++ b/device.mk
@@ -149,6 +149,10 @@
 PRODUCT_PROPERTY_OVERRIDES += \
 	persist.radio.apm_sim_not_pwdn=1
 
+# Ril sends only one RIL_UNSOL_CALL_RING, so set call_ring.multiple to false
+PRODUCT_PROPERTY_OVERRIDES += \
+	ro.telephony.call_ring.multiple=0
+
 #Upto 3 layers can go through overlays
 PRODUCT_PROPERTY_OVERRIDES += debug.mdpcomp.maxlayer=3