FS: import F2FS

Signed-off-by: Paul Reioux <reioux@gmail.com>
defconfig: enable F2F2

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
defconfig: f2fs: enable fsf2 fs security

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
add buildscript. Call it with . buildme.sh <branch>

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
buildme: Ofc we need dtb on the hammerhead
copy and paste hit me critically there. In my face. :)

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
we don't need prebuilts on twrp builds

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
update gitignore

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
gitignore: add toolch and prebuilt dirs

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
gitignore: remove buildme.sh

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>