Allow vendor domain to communicate with traced.

This is necessary for vendor code to be able to send trace packets to
Perfetto, which we are doing as part of an effort to provide more
detailed profiling of some vendor code.

Bug: 222684359
Test: (with downstream policy updates) m selinux_policy
Change-Id: I5ab1c04290f69e391d66a76c262d75cadb794f8d
1 file changed