allow system_server block_suspend

I'm only seeing this denial on one device (manta), but it feels like
it should be part of the generic policy. I don't understand
why it's happening on only one device.

Addresses the following denial:

14.711671   type=1400 audit(1387474628.570:6): avc:  denied  { block_suspend } for  pid=533 comm="InputReader" capability=36  scontext=u:r:system_server:s0 tcontext=u:r:system_server:s0 tclass=capability2

Change-Id: If4b28b6f42ca92c0e2cacfad75c8cbe023b0fa47
1 file changed