rust: prelude: add zerocopy{,_derive}::FromBytes

In order to easily use `FromBytes`, add it to the prelude.

This adds both the trait (`zerocopy::FromBytes`) as well as the derive
macro (`zerocopy_derive::FromBytes`).

We will be adding more as we need them.

Link: https://patch.msgid.link/20260608141439.182634-19-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>

rust/kernel/prelude.rs

@@ -60,6 +60,12 @@ pub use pin_init::{
     Zeroable, //
 };
 
+#[doc(no_inline)]
+pub use zerocopy::FromBytes;
+
+#[doc(no_inline)]
+pub use zerocopy_derive::FromBytes;
+
 #[doc(no_inline)]
 pub use super::{
     alloc::{