Move sepolicy for _touchflow targets.

Bug: 187654303
Test: touch reflector works on flame and redfin
Change-Id: I01f378b51d2d6bd77b6e4062e85b2d583899dce5
diff --git a/input/file_contexts b/input/file_contexts
new file mode 100644
index 0000000..09728be
--- /dev/null
+++ b/input/file_contexts
@@ -0,0 +1,2 @@
+/dev/touch_offload                                                               u:object_r:touch_offload_device:s0
+/vendor/bin/twoshay                                                              u:object_r:twoshay_exec:s0