pico : Build ext4 parts
We are now using sd-ext partitions

Change-Id: I76ad683c92d20c16e91c7a179ae1117de25cda63
BoardConfig.mk : Dont build wifi hal

Change-Id: Ib29f5e1e64a708a8c8c63a41e383eaa78dfd93a7
BoardConfig.mk : add support for Legacy OMX

Change-Id: I06fcfaec4aef94ba20ed549fd69bd742e55c5c93