fixup! rust: drm: gem: Add GEM object abstraction

kernel API change: add optional drm_gem_object_funcs.rss function ptr

Signed-off-by: Janne Grunau <j@jannau.net>
(cherry picked from commit a0f94ad https://github.com/AsahiLinux/linux)
Signed-off-by: John Cabaj <john.cabaj@canonical.com>

Author: jannau

rust/kernel/drm/gem/mod.rs

@@ -238,6 +238,7 @@ impl<T: DriverObject> Object<T> {
         vunmap: None,
         mmap: None,
         status: None,
+        rss: None,
         vm_ops: core::ptr::null_mut(),
         evict: None,
     };