drm/amd: Skip power ungate during suspend for VPE

drm/amd: Skip power ungate during suspend for VPE

commit 31ab31433c9bd2f255c48dc6cb9a99845c58b1e4 upstream.

During the suspend sequence VPE is already going to be power gated
as part of vpe_suspend().  It's unnecessary to call during calls to
amdgpu_device_set_pg_state().

It actually can expose a race condition with the firmware if s0i3
sequence starts as well.  Drop these calls.

Cc: Peyton.Lee@amd.com
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 2a6c826cfeedd7714611ac115371a959ead55bda)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>