drm/radeon: consolidate sdma hdp flushing code for CIK
authorAlex Deucher <alexander.deucher@amd.com>
Thu, 9 Jan 2014 21:23:37 +0000 (16:23 -0500)
committerAlex Deucher <alexander.deucher@amd.com>
Mon, 20 Jan 2014 17:05:13 +0000 (12:05 -0500)
It's used in several places so move to a common shared
function.

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

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