rust/faux: Drop #[repr(transparent)] from faux::Registration

I think this change got missed during review, we don't need
 #[repr(transparent)] since Registration just holds a single NonNull. This
attribute had originally been added by me when I was still figuring out how
the bindings should look like but got committed by mistake. So, just drop
it.

Signed-off-by: Lyude Paul <lyude@redhat.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Reviewed-by: Fiona Behrens <me@Kloenk.dev>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://lore.kernel.org/r/20250225213112.872264-2-lyude@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: Lyude

rust/kernel/faux.rs

@@ -19,7 +19,6 @@ use core::ptr::{addr_of_mut, null, null_mut, NonNull};
 /// `self.0` always holds a valid pointer to an initialized and registered [`struct faux_device`].
 ///
 /// [`struct faux_device`]: srctree/include/linux/device/faux.h
-#[repr(transparent)]
 pub struct Registration(NonNull<bindings::faux_device>);
 
 impl Registration {