fixup! rust: drm: ioctl: Add DRM ioctl abstraction

kernel API change: purge removed DRM_UNLOCKED

Signed-off-by: Janne Grunau <j@jannau.net>
(cherry picked from commit 461c2ba https://github.com/AsahiLinux/linux)
Signed-off-by: John Cabaj <john.cabaj@canonical.com>

Author: jannau

rust/kernel/drm/ioctl.rs

@@ -55,13 +55,6 @@ pub const MASTER: u32 = bindings::drm_ioctl_flags_DRM_MASTER;
 /// This is equivalent to callers with the SYSADMIN capability.
 pub const ROOT_ONLY: u32 = bindings::drm_ioctl_flags_DRM_ROOT_ONLY;
 
-/// Whether drm_ioctl_desc.func should be called with the DRM BKL held or not. Enforced as the
-/// default for all modern drivers, hence there should never be a need to set this flag.
-///
-/// Do not use anywhere else than for the VBLANK_WAIT IOCTL, which is the only legacy IOCTL which
-/// needs this.
-pub const UNLOCKED: u32 = bindings::drm_ioctl_flags_DRM_UNLOCKED;
-
 /// This is used for all ioctl needed for rendering only, for drivers which support render nodes.
 /// This should be all new render drivers, and hence it should be always set for any ioctl with
 /// `AUTH` set. Note though that read-only query ioctl might have this set, but have not set