Sepolicy for bufferhub hwservice

Bug: 118124442
Test: device can boot with android.frameworks.bufferhub@1.0-service
      running
Change-Id: I1d186d5350671b0d2dd4e831429b8fba828316e0
diff --git a/private/file_contexts b/private/file_contexts
index ecab5a2..d0398a8 100644
--- a/private/file_contexts
+++ b/private/file_contexts
@@ -289,6 +289,7 @@
 /system/bin/thermalserviced      u:object_r:thermalserviced_exec:s0
 /system/bin/wpantund             u:object_r:wpantund_exec:s0
 /system/bin/virtual_touchpad     u:object_r:virtual_touchpad_exec:s0
+/system/bin/hw/android\.frameworks\.bufferhub@1\.0-service    u:object_r:fwk_bufferhub_exec:s0
 /system/bin/hw/android\.hidl\.allocator@1\.0-service          u:object_r:hal_allocator_default_exec:s0
 /system/bin/hw/android\.system\.suspend@1\.0-service          u:object_r:hal_system_suspend_default_exec:s0
 /system/etc/ld\.config.*                u:object_r:system_linker_config_file:s0