From 13ffadd1f9fa2e19ecb054b063887dcd62dde2be Mon Sep 17 00:00:00 2001
From: Ben Widawsky <benjamin.widawsky@intel.com>
Date: Tue, 1 Apr 2014 16:31:07 -0700
Subject: [PATCH] drm/i915/bdw: Expand FADD to 64bit

For error state, like the recent modification to ACTHD, FADD also gets
an upper dword. This is useful for debug to make sure the fetch address
and head are similar.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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