drm/i915: enable gmbus on gen2

With the recent set of gmbus fixes, this seems to work on my i855gm.
Acked-by: NChris Wilson <chris@chris-wilson.co.uk>
Signed-Off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/intel_i2c.c

@@ -389,10 +389,6 @@ int intel_setup_gmbus(struct drm_device *dev)
 		bus->reg0 = i | GMBUS_RATE_100KHZ;
 
 		bus->has_gpio = intel_gpio_setup(bus, i);
-
-		/* XXX force bit banging until GMBUS is fully debugged */
-		if (bus->has_gpio && IS_GEN2(dev))
-			bus->force_bit = true;
 	}
 
 	intel_i2c_reset(dev_priv->dev);