rootdir: Set perms on interactive governor's min_sample_time

https://github.com/cyanogenmod/android_system_core/commit/fd4d11e335633067683344de0395221d0f48cb99
init.rc: Create /storage mountpoint so Dalvik can mark as slave in zygotes

https://github.com/CyanogenMod/android_system_core/commit/5366657219454434a99a5a5fb3d0dda4dad78b9f
rootdir: set perms on ondemand governor's up_threshold