Add a new permission in AOSP

This adds a new permission in AOSP, so it can be referenced by the Shell
command, which presubmit suggests has to be maintained in AOSP.

Bug: 159891384
Test: build only
Exempt-From-Owner-Approval: jsharkey@ approved but it appears to have reset...?
Change-Id: Ic7d403e20731e9d6bd82d5b2e2758cc61989cc59