Add TCSETS to unpriv_tty_ioctls

Addresses the following denial:

avc: denied { ioctl } for comm="top" path="/dev/pts/0" dev="devpts"
ino=3 ioctlcmd=5402 scontext=u:r:shell:s0 tcontext=u:object_r:devpts:s0
tclass=chr_file permissive=0

Bug: 33073072
Bug: 7530569
Test: policy compiles.
Change-Id: If9178d29f2295be46bb118df00ebf73a6ebc9f81