drm/radeon: use WRITE_DATA packets for vm flush on SI

This is the preferred packet for writing data to memory
or registers on SI.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2012-10-02 14:39:18 -04:00
commit 76c44f2c0d
2 changed files with 36 additions and 7 deletions