Update FIFO settings for new uses of FIFO.

Adjust FIFO timings as well as allow SurfaceFlinger to use FIFO.

bug 24503801

Change-Id: I2c21d4c1788777c2d0d77227bb872701b35c4ff6
diff --git a/rootdir/init.rc b/rootdir/init.rc
index 3da836c..da3b98b 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -136,16 +136,17 @@
     chown system system /dev/cpuctl/tasks
     chmod 0666 /dev/cpuctl/tasks
     write /dev/cpuctl/cpu.shares 1024
-    write /dev/cpuctl/cpu.rt_runtime_us 800000
     write /dev/cpuctl/cpu.rt_period_us 1000000
+    write /dev/cpuctl/cpu.rt_runtime_us 950000
 
     mkdir /dev/cpuctl/bg_non_interactive
     chown system system /dev/cpuctl/bg_non_interactive/tasks
     chmod 0666 /dev/cpuctl/bg_non_interactive/tasks
     # 5.0 %
     write /dev/cpuctl/bg_non_interactive/cpu.shares 52
-    write /dev/cpuctl/bg_non_interactive/cpu.rt_runtime_us 700000
     write /dev/cpuctl/bg_non_interactive/cpu.rt_period_us 1000000
+    # active FIFO threads will never be in BG
+    write /dev/cpuctl/bg_non_interactive/cpu.rt_runtime_us 10000
 
     # sets up initial cpusets for ActivityManager
     mkdir /dev/cpuset