From 02f5eebb63ad52c832a81109d68718df6cb1155e Mon Sep 17 00:00:00 2001
From: Jesse Barnes <jbarnes@virtuousgeek.org>
Date: Wed, 12 Feb 2014 15:03:40 -0800
Subject: [PATCH] drm/i915: don't preserve inherited configs with nothing on v2

It can be corrected later and may be what was actually desired, but
generally isn't, so if we find nothing is enabled, let the core DRM fb
helper figure something out.

v2: free the array too (Jesse)

Note that this also undoes any changes in case we bail out due to hw
cloning.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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