Revert "Implement comparisons without allocating"

This reverts commit 6430e27.

src/drivers/virtio/mod.rs

@@ -95,13 +95,13 @@ pub mod features {
 
 	impl PartialEq<Features> for u64 {
 		fn eq(&self, other: &Features) -> bool {
-			self == other
+			*self == u64::from(*other)
 		}
 	}
 
 	impl PartialEq<u64> for Features {
 		fn eq(&self, other: &u64) -> bool {
-			self == other
+			u64::from(*self) == *other
 		}
 	}
 

src/drivers/virtio/virtqueue/mod.rs

@@ -2342,7 +2342,7 @@ impl BitAnd<DescrFlags> for u16 {
 
 impl PartialEq<DescrFlags> for u16 {
 	fn eq(&self, other: &DescrFlags) -> bool {
-		self == other
+		*self == u16::from(*other)
 	}
 }