Revert "drm/i915/vlv: fixup DDR freq detection per Punit spec"

As per the inputs provided by hardware team we still use DDR
Rates as 0,1=800, 2=1066, 3=1333.
With this change, Turbo freqs used on current machines matches.

This reverts commit f64a28a7c5ab2fc342326de9e126acf3cc0f91d6.

commit f64a28a7c5ab2fc342326de9e126acf3cc0f91d6
Author: Jesse Barnes <[e-mail]>
Date: Mon Nov 4 16:07:00 2013 -0800

drm/i915/vlv: fixup DDR freq detection per Punit spec

v2: Add reference to previous commit which changed this. (Daniel)

Acked-by: Jesse Barnes <[e-mail]>
Signed-off-by: Deepak S <[e-mail]>
Signed-off-by: Daniel Vetter <[e-mail]>

drivers/gpu/drm/i915/intel_pm.c

···
 	mutex_unlock(&dev_priv->rps.hw_lock);
 	switch ((val >> 6) & 3) {
 	case 0:
+	case 1:
 		dev_priv->mem_freq = 800;
 		break;
-	case 1:
-		dev_priv->mem_freq = 1066;
-		break;
 	case 2:
-		dev_priv->mem_freq = 1333;
+		dev_priv->mem_freq = 1066;
 		break;
 	case 3:
 		dev_priv->mem_freq = 1333;