drm/nouveau/bios/dp: parse lane postcursor data

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

diff --cc drivers/gpu/drm/nouveau/core/engine/disp/sornv94.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/core/engine/disp/sornvd0.c
Simple merge

diff --cc drivers/gpu/drm/nouveau/core/include/subdev/bios/dp.h
Simple merge

diff --cc drivers/gpu/drm/nouveau/core/subdev/bios/dp.c
Simple merge