common: private: Label mirroring disablement property

Change-Id: I164fb03a13661b92659525e2d00b5ee036124e37
diff --git a/common/private/property_contexts b/common/private/property_contexts
index af7e1b4..fc67ab5 100644
--- a/common/private/property_contexts
+++ b/common/private/property_contexts
@@ -16,3 +16,6 @@
 
 # xtra-daemon control
 persist.sys.xtra-daemon.enabled        u:object_r:xtra_control_prop:s0 exact bool
+
+# Screen mirroring disablement
+persist.sysui.disable_mirroring_confirmation_dialog u:object_r:hdmi_config_prop:s0