drm/i915: Replace the feature tests for BLT/BSD with ring init checks

When userspace asks whether the driver supports the BLT or BSD rings for
this chip, simply report whether those particular rings are initialised

v2: Use intel_ring_initialized()
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_dma.c

@@ -980,10 +980,10 @@ static int i915_getparam(struct drm_device *dev, void *data,
 		value = 1;
 		break;
 	case I915_PARAM_HAS_BSD:
-		value = HAS_BSD(dev);
+		value = intel_ring_initialized(&dev_priv->ring[VCS]);
 		break;
 	case I915_PARAM_HAS_BLT:
-		value = HAS_BLT(dev);
+		value = intel_ring_initialized(&dev_priv->ring[BCS]);
 		break;
 	case I915_PARAM_HAS_RELAXED_FENCING:
 		value = 1;