p1: overlay: external sdcard is hot-pluggable

Signed-off-by: Humberto Borba <humberos@gmail.com>
Change-Id: I84c0c09bea44cfa6270ead8439840f46b72d81e2
p1: init: use lz4 instead lzo for zram driver

Signed-off-by: Humberto Borba <humberos@gmail.com>
Change-Id: Ifad272b103d3f4859e69ce35c038e22c3c323305
Merge pull request #4 from omnirom/android-4.4

update repo