drm/radeon: fix backend map setup on 1 RB trinity boards
authorAlex Deucher <alexander.deucher@amd.com>
Mon, 11 Mar 2013 23:28:39 +0000 (19:28 -0400)
committerAlex Deucher <alexander.deucher@amd.com>
Fri, 15 Mar 2013 22:47:17 +0000 (18:47 -0400)
Need to adjust the backend map depending on which RB is
enabled.  This is the trinity equivalent of:
f7eb97300832f4fe5fe916c5d84cd2e25169330e

May fix:
https://bugs.freedesktop.org/show_bug.cgi?id=57919

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

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