Update SuperSU for DU [2/2]

Thanks to chinfire's "How to SU" guide,
I've managed to get SuperSU zip flashing on every
rom flash and it can easily be updated in
vendor_du

Change-Id: I0f57f8c2b8733021c3c0b9a5fd3c343ae565a959

Signed-off-by: LorDClockaN <davor@losinj.com>