drm/amd/powerplay: A workaround to GPU RESET on APU

drm/amd/powerplay: A workaround to GPU RESET on APU

BugLink: https://bugs.launchpad.net/bugs/1858428
[ Upstream commit 068ad870bbd8f4f2c5b2fd4977a4f3330c9988f4 ]

Changes to function "smu_suspend" in amdgpu_smu.c is a workaround.

We should get real information about if baco is enabled or not, while we
always consider APU SMU feature as enabled in current code.

I know APU do not support baco mode for GPU reset, so I use
"adev->flags" to skip function "smu_feature_is_enabled".

Signed-off-by: chen gong <curry.gong@amd.com>
Reviewed-by: Aaron Liu <aaron.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>