drm/radeon: document VM functions in radeon_gart.c (v3)

Document the VM functions in radeon_gart.c

v2: adjust per Christian's suggestions
v3: adjust to Christians's latest changes

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
Alex Deucher 2012-07-17 14:02:40 -04:00 • committed by Christian König
commit 09db864432