drm/i915/skl: Remove the check enforcing VCS2 to be gen8 only

We already track this in the intel_info struct.
Signed-off-by: NDamien Lespiau <damien.lespiau@intel.com>
Reviewed-by: NRodrigo Vivi <rodrigo.vivi@intel.com>
[danvet: Make the commit message a bit less terse.]
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/intel_ringbuffer.c

@@ -2597,19 +2597,13 @@ int intel_init_bsd_ring_buffer(struct drm_device *dev)
 }
 
 /**
- * Initialize the second BSD ring for Broadwell GT3.
- * It is noted that this only exists on Broadwell GT3.
+ * Initialize the second BSD ring (eg. Broadwell GT3, Skylake GT3)
  */
 int intel_init_bsd2_ring_buffer(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct intel_engine_cs *ring = &dev_priv->ring[VCS2];
 
-	if ((INTEL_INFO(dev)->gen != 8)) {
-		DRM_ERROR("No dual-BSD ring on non-BDW machine\n");
-		return -EINVAL;
-	}
-
 	ring->name = "bsd2 ring";
 	ring->id = VCS2;