Force logwrapper to system_file

Some device-specific policies are improperly creating a security
domain for logwrapper, rather than removing the logwrapper
lines from init.device.rc. Don't allow that. Explicitly add an entry
for /system/bin/logwrapper to force it to a system_file. Attempting
to override this will result in the following compile time error:

  obj/ETC/file_contexts_intermediates/file_contexts: Multiple different
  specifications for /system/bin/logwrapper
  (u:object_r:logwrapper_exec:s0 and u:object_r:system_file:s0).

Bug: 15616899
Change-Id: Ia55394247a9fa16e00434d61091fff9d9d4ff125
diff --git a/file_contexts b/file_contexts
index 82b8c1c..dd09c1f 100644
--- a/file_contexts
+++ b/file_contexts
@@ -157,6 +157,7 @@
 /system/bin/inputflinger u:object_r:inputflinger_exec:s0
 /system/bin/logd        u:object_r:logd_exec:s0
 /system/bin/uncrypt     u:object_r:uncrypt_exec:s0
+/system/bin/logwrapper  u:object_r:system_file:s0
 #############################
 # Vendor files
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