gatekeeper HAL service: add security policy

Change-Id: I79a305407c3a362d7be11f4c026f31f1e9666f1c
Signed-off-by: Alexey Polyudov <apolyudov@google.com>
diff --git a/private/file_contexts b/private/file_contexts
index 6f8f741..5b5b7d5 100644
--- a/private/file_contexts
+++ b/private/file_contexts
@@ -233,6 +233,7 @@
 /system/bin/hw/android\.hardware\.boot@1\.0-service           u:object_r:hal_boot_exec:s0
 /system/bin/hw/android\.hardware\.contexthub@1\.0-service     u:object_r:hal_contexthub_default_exec:s0
 /system/bin/hw/android\.hardware\.dumpstate@1\.0-service      u:object_r:hal_dumpstate_default_exec:s0
+/system/bin/hw/android\.hardware\.gatekeeper@1\.0-service     u:object_r:hal_gatekeeper_default_exec:s0
 /system/bin/hw/android\.hardware\.graphics\.allocator@2\.0-service   u:object_r:hal_graphics_allocator_default_exec:s0
 /system/bin/hw/android\.hardware\.graphics\.composer@2\.1-service    u:object_r:hal_graphics_composer_default_exec:s0
 /system/bin/hw/android\.hardware\.health@1\.0-service         u:object_r:hal_health_default_exec:s0