gvt-next-2022-11-17

- kernel doc fixes
- remove vgpu->released sanity check
- small clean up
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
From: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221117064106.GT30028@zhen-hp.sh.intel.com