sepolicy: diag-router: Add mhi device permissions

diag-router needs mhi character dev read/write permissions to bridge
the diag connection to external socs.

Change-Id: I22028e1c9b164aba24374413e16440e8deae8c4b
3 files changed
tree: 3859bb9a3d19eb4cfa4c3af3ae2d02d3263c8219
  1. generic/
  2. legacy/
  3. qva/
  4. SEPolicy.mk