drm/radeon/dpm: track whether we are on AC or battery
authorAlex Deucher <alexander.deucher@amd.com>
Fri, 30 Nov 2012 15:56:57 +0000 (10:56 -0500)
committerAlex Deucher <alexander.deucher@amd.com>
Thu, 27 Jun 2013 23:15:51 +0000 (19:15 -0400)
Driver needs this information to validate power states.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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