ARM: dts: msm: Add LUTBUS support for VIG Gamut on Lahaina

On Lahaina based targets the DB LUTDMA engine now supports the
new LUTBUS DMA operation. Update VIG Gamut version to indicate
the LUTBUS operation is now used for DMA programming.

Change-Id: I0979be7aaaec6b8a45fd44d40523bc459dbe948e