drm/i915: Rename bw_state to new_bw_state

{

	struct drm_i915_private *dev_priv = to_i915(state->base.dev);

	struct intel_crtc_state *new_crtc_state, *old_crtc_state;

	struct intel_bw_state *bw_state = NULL;

	struct intel_bw_state *new_bw_state = NULL;

	unsigned int data_rate, max_data_rate;

	unsigned int num_active_planes;

	struct intel_crtc *crtc;

		    old_active_planes == new_active_planes)

			continue;

		bw_state  = intel_atomic_get_bw_state(state);

		if (IS_ERR(bw_state))

			return PTR_ERR(bw_state);

		new_bw_state = intel_atomic_get_bw_state(state);

		if (IS_ERR(new_bw_state))

			return PTR_ERR(new_bw_state);

		bw_state->data_rate[crtc->pipe] = new_data_rate;

		bw_state->num_active_planes[crtc->pipe] = new_active_planes;

		new_bw_state->data_rate[crtc->pipe] = new_data_rate;

		new_bw_state->num_active_planes[crtc->pipe] = new_active_planes;

		drm_dbg_kms(&dev_priv->drm,

			    "pipe %c data rate %u num active planes %u\n",

			    pipe_name(crtc->pipe),

			    bw_state->data_rate[crtc->pipe],

			    bw_state->num_active_planes[crtc->pipe]);

			    new_bw_state->data_rate[crtc->pipe],

			    new_bw_state->num_active_planes[crtc->pipe]);

	}

	if (!bw_state)

	if (!new_bw_state)

		return 0;

	ret = intel_atomic_lock_global_state(&bw_state->base);

	ret = intel_atomic_lock_global_state(&new_bw_state->base);

	if (ret)

		return ret;

	data_rate = intel_bw_data_rate(dev_priv, bw_state);

	num_active_planes = intel_bw_num_active_planes(dev_priv, bw_state);

	data_rate = intel_bw_data_rate(dev_priv, new_bw_state);

	num_active_planes = intel_bw_num_active_planes(dev_priv, new_bw_state);

	max_data_rate = intel_max_data_rate(dev_priv, num_active_planes);