crespo4g: init.herring: switch to "ondemand" governor

(Similar to the crespo change I15dd81e70c87082b40431992dd3d361746295ef3)

The current interactive governor is either too aggressive (power) or
not aggressive enough (gpu).
Ondemand seems viable now that Bug:5272232 is fixed.

Change-Id: I4d7cd5fc2edf0772402e73ac7905f42e56a2c1db
diff --git a/init.herring.rc b/init.herring.rc
index c86c0fe..d6a3a6c 100755
--- a/init.herring.rc
+++ b/init.herring.rc
@@ -33,6 +33,9 @@
     mkdir /data/gps 770 gps system
     chown gps system /data/gps
+# cpufreq, set ondemand governor
+    write /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor ondemand
 on fs
     mkdir /efs 0775 radio radio
     mount yaffs2 mtd@efs /efs nosuid nodev