cupid: Import mod_device property

Change-Id: Ide1eba4a88a17ff514baabc4b464e971e1a2bb89

BoardConfig.mk

@@ -13,6 +13,7 @@ include vendor/xiaomi/cupid/BoardConfigVendor.mk
 DEVICE_PATH := device/xiaomi/cupid
 
 # Properties
+TARGET_SYSTEM_PROP += $(DEVICE_PATH)/properties/system.prop
 TARGET_VENDOR_PROP += $(DEVICE_PATH)/properties/vendor.prop
 
 # Screen density

properties/system.prop

@@ -0,0 +1,2 @@
+# Xiaomi
+ro.product.mod_device=cupid_global