Dotcase: Add support for additional apps.

Kik Messenger Sprite Added.
Facebook Messenger Sprite Added.

Change-Id: Ide34fe4b172234c4e9654dc10bab9cb6e005689a
m8: switch to 400 density

Change-Id: I09f7bbe802c9ac7b6d7ad9dc1295b494b31f39d0
m8: Don't set derived directory permissions

* Derived directory permissions still prevent writes to most of the SD
  card.

Change-Id: Ia583ede76fde439849b83b94b3a4db38c18502a6
m8: Enable offloaded audio effects

Change-Id: I298c2bf8836cc7abbc7739cc9f8a5b34bf1340cb
m8: Use extended audio platform to provide speaker backend

Change-Id: I8f1d04df822b3c3fc0884bb05344874411600370
fstab: support ext4 and f2fs data and cache

Change-Id: I59ba00151618074a4deedeab7690895aa4c7103f
BoardConfig: use linaro-4.9_a15 for kernel

Change-Id: Iea48fcff9e206cf58bce372f6f4be7a0c07b1ea4