gpu: nova-core: derive useful traits for Chipset

We will commonly need to compare chipset versions, so derive the
ordering traits to make that possible. Also derive Copy and Clone since
passing Chipset by value will be more efficient than by reference.

Signed-off-by: Alexandre Courbot <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Danilo Krummrich <[e-mail]>

drivers/gpu/nova-core/gpu.rs

···
     ({ $($variant:ident = $value:expr),* $(,)* }) =>
     {
         /// Enum representation of the GPU chipset.
-        #[derive(fmt::Debug)]
+        #[derive(fmt::Debug, Copy, Clone, PartialOrd, Ord, PartialEq, Eq)]
         pub(crate) enum Chipset {
             $($variant = $value),*,
         }