Ramdisk: set vibration intensity to the maximum allowed in the kernel
Keylayout: fix issue where back key can't be programmed with custom action (credit: tdimarzio, from XDA
Overlay: disable video snapshot
Overlay: add config for Gallery2
Ramdisk: remove useless code, make OOM settings stricter, and enable KSM
System.prop: remove scrolling tweaks
Overlay: disable WiFi background scan support

Our device's WiFi chip doesn't work well with this.
Overlay: Gallery2: set isVideoSnapshotSupported to false (taking a snapshot while recording on our device crashes gallery)