Lower the priority of the threads in logd/logcat.

(cherry pick from commit d98f4e8af5076e6a9dbd4ddc2c375cb7bcda8cd8)

sched_batch implies only a penalty to latency in scheduling, but
does not imply that the process will be given less cpu time. Increase
the nice level to 10 to prioritize it below ui threads.

Bug: 21696721
Change-Id: I075af059dc755402f7df9b0d7a66cca921ff04b2
2 files changed