Update filesystem permissions for gpu frequency tracepoints

This tracepoint is used to log changes to the GPU clock speed
which is useful for developers and should be available in user
builds.

This tracepoint is used by Perfetto (see bug for details).

Bug: 136062452
Change-Id: If7e43bcf95e0f2162af618b20d3c26aad3264f97
1 file changed