sepolicy: Add apex/com.android.tethering.inprocess-file_contexts

Needed when using com.android.tethering.inprocess with
flattened APEX.

Bug: 273821347
Test: trybot
Change-Id: Iae6d9547922575398c634433dc07b2e46fbffd8e
diff --git a/apex/com.android.tethering.inprocess-file_contexts b/apex/com.android.tethering.inprocess-file_contexts
new file mode 100644
index 0000000..af366d8
--- /dev/null
+++ b/apex/com.android.tethering.inprocess-file_contexts
@@ -0,0 +1,3 @@
+(/.*)?                  u:object_r:system_file:s0
+/bin/for-system/clatd   u:object_r:clatd_exec:s0
+/lib(64)?(/.*)          u:object_r:system_lib_file:s0