sepolicy: allow system server for BINDER_GET_FROZEN_INFO

the new ioctl allows system server to verfiry the state of a frozen
binder inderface before unfreezing a process.

Bug: 143717177
Test: verified ActivityManager could access the ioctl
Change-Id: Id9d90d072ce997ed20faa918ec68f1110e2bac8f
Merged-In: Id9d90d072ce997ed20faa918ec68f1110e2bac8f
4 files changed