drm/virtio: use uninterruptible resv lock for plane updates

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2026-64098 · Microsoft / collected KEV context

cve-program · CVE-2026-64098

• https://git.kernel.org/stable/c/c86077d512ee980cc91322211d35dbcd3175f64c
• https://git.kernel.org/stable/c/21ab64c77a30d56efc506c8fa2ad8959f8ce3d36
• https://git.kernel.org/stable/c/7930eee22cd3df61e85be8aa512032ab303b7167
• https://git.kernel.org/stable/c/8fadd01cf461fee5bb11506621339c548447e5c7
• https://git.kernel.org/stable/c/a2359a411b15f495d12cfda6a7db6855ebb7f90f
• https://git.kernel.org/stable/c/9af1b6e175c82daf4b423da339a722d8e67a735a

No related operational record is retained in the current change model.