Add ro.cpuvulkan.version to property_contexts

Bug: 173683489
Test: vts_treble_sys_prop_test
Test: VulkanTest
Change-Id: I4d78ed5de6640c4342c4f6c2362976577007a681
diff --git a/private/property_contexts b/private/property_contexts
index 5750acc..1f76557 100644
--- a/private/property_contexts
+++ b/private/property_contexts
@@ -1031,6 +1031,8 @@
 graphics.gpu.profiler.support          u:object_r:graphics_config_prop:s0 exact bool
 graphics.gpu.profiler.vulkan_layer_apk u:object_r:graphics_config_prop:s0 exact string
 
+ro.cpuvulkan.version u:object_r:graphics_config_prop:s0 exact int
+
 # surfaceflinger-settable
 graphics.display.kernel_idle_timer.enabled u:object_r:surfaceflinger_display_prop:s0 exact bool