Revert "Remove uneeded file"

This reverts commit 0d99fc4904a5c26640e6bc7bd67ae1421311cfc7.
Base: Cleanup [1/2]
Same file is allocated into https://github.com/crdroidandroid/android_frameworks_base/blob/kitkat/core/java/com/android/internal/util/slim/DeviceUtils.java