drm/amdgpu/gfx: adjust gfx_v8_0_send_serdes_cmd for ST

Acked-by: Tom St Denis <tom.stdenis@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2016-04-07 23:16:00 -04:00
commit 146f256fae