Improvement to DVI monitor support
The wrong GPIO expander lines were being set to power the HDMI level translator, should be port 0 bits 0/1 (per https://patchwork.kernel.org/patch/7387151/). Also, the Vdda voltage was slightly too high (per https://patchwork.kernel.org/patch/9084381/).
Tested with an IGEPv5 and Samsung LS22E45KBWV monitor; this may improve the odds of other models of DVI monitors working too.