Add export of ro.hdmi.cec_device_types

Bug: 154122911
Test: m vendor_property_contexts_test
Change-Id: If16d35b7395df24eb9c8f82a2d2af0dee0299b36
diff --git a/private/property_contexts b/private/property_contexts
index cfcfd5e..e681275 100644
--- a/private/property_contexts
+++ b/private/property_contexts
@@ -362,6 +362,7 @@
 persist.radio.multisim.config u:object_r:exported3_radio_prop:s0 exact string
 
 persist.sys.hdmi.keep_awake u:object_r:hdmi_config_prop:s0 exact bool
+ro.hdmi.cec_device_types    u:object_r:hdmi_config_prop:s0 exact string
 ro.hdmi.device_type         u:object_r:hdmi_config_prop:s0 exact string
 ro.hdmi.wake_on_hotplug     u:object_r:hdmi_config_prop:s0 exact bool