drm/amdgpu: trigger flr_work if reading pf2vf data failed

[ Upstream commit ab66c832 ]

if reading pf2vf data failed 30 times continuously, it means something is
wrong. Need to trigger flr_work to recover the issue.

also use dev_err to print the error message to get which device has
issue and add warning message if waiting IDH_FLR_NOTIFICATION_CMPL
timeout.

Signed-off-by: Zhigang Luo <Zhigang.Luo@amd.com>
Acked-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Stable-dep-of: d0ce1aaa ("Revert "drm/amd: Stop evicting resources on APUs in suspend"")
Signed-off-by: Sasha Levin <sashal@kernel.org>