Add SELinux policies for vr_window_manager

This set of rules is neeeded to allow vr_windows_manager to run
successfully on the system.

Bug: 32541196
Test: `m -j32` succeeds. Sailfish device boots.
Change-Id: I0aec94d80f655a6f47691cf2622dd158ce9e475f
diff --git a/private/file_contexts b/private/file_contexts
index 8cd8123..d6a2483 100644
--- a/private/file_contexts
+++ b/private/file_contexts
@@ -246,6 +246,7 @@
 /system/bin/webview_zygote32     u:object_r:webview_zygote_exec:s0
 /system/bin/webview_zygote64     u:object_r:webview_zygote_exec:s0
 /system/bin/virtual_touchpad     u:object_r:virtual_touchpad_exec:s0
+/system/bin/vr_wm                u:object_r:vr_wm_exec:s0
 /system/bin/hw/android\.hardware\.bluetooth@1\.0-service      u:object_r:hal_bluetooth_default_exec:s0
 /system/bin/hw/android\.hidl\.memory@1\.0-service             u:object_r:hal_allocator_exec:s0