priv_app: suppress denials to proc_net

avc: denied { read } for comm="UserFacing3" name="arp" dev="proc"
ino=4026532043 scontext=u:r:priv_app:s0:c512,c768
tcontext=u:object_r:proc_net:s0 tclass=file permissive=0
app=com.google.android.googlequicksearchbox

Bug: 132376360
Test: m selinux_policy
Change-Id: I6ebe8b6806268f31885026a81ebea0ed15b532d2
1 file changed