drm/i915: ns2501 is on DVOB

On Fujitsu-Siememens S6010 the ns2501 chip is hooked up to DVOB instead
of DVOC.

FIXME: Maybe need to dig out the correct DVO port from VBT
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Tested-by: NThomas Richter <richter@rus.uni-stuttgart.de>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/intel_dvo.c

@@ -85,7 +85,7 @@ static const struct intel_dvo_device intel_dvo_devices[] = {
 	{
 	        .type = INTEL_DVO_CHIP_TMDS,
 		.name = "ns2501",
-		.dvo_reg = DVOC,
+		.dvo_reg = DVOB,
 		.slave_addr = NS2501_ADDR,
 		.dev_ops = &ns2501_ops,
        }