LCD_KCAL: Color Control driver for Nexus 5

Signed-off-by: Jean Francis Dominique S. Mabalot <jfdsmabalot@redhat.com>
FS: import F2FS

Signed-off-by: Paul Reioux <reioux@gmail.com>
defconfig: add f2fs support
Signed-off-by: Jean Francis Dominique S. Mabalot <jfdsmabalot@redhat.com>
defconfig: enable KCAL
Signed-off-by: Jean Francis Dominique S. Mabalot <jfdsmabalot@redhat.com>