(From OmapZoom 3.4) OMAPLFB: VRAM buffers for second FB.

For JB-MR1 HWCv1.1 we need a second FB device setup at init time.

A swapchain of VRAM buffers are setup at init time.

Change-Id: Ifd5d100a939dce285ac3c844edad525043f933e8
Added iptables support for ipv6.
Disable fake vsync, because this is done in the hwc implementation.
Disabled debug message, which fills up the logfile.