sapphire: Import mod_device property

Change-Id: Ide1eba4a88a17ff514baabc4b464e971e1a2bb89
Signed-off-by: ReStranger <restranger@disroot.org>
diff --git a/BoardConfig.mk b/BoardConfig.mk
index 17f76ac..bfba466 100644
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -12,5 +12,8 @@
 # Inherit the proprietary files
 include vendor/xiaomi/sapphire/BoardConfigVendor.mk
 
+# Properties
+TARGET_SYSTEM_PROP += $(DEVICE_PATH)/properties/system.prop
+
 # Screen density
 TARGET_SCREEN_DENSITY := 440