nvme: add optional copy format support id ctrl field

Add the OCFS field in Identify Controller Structure, as per the
Ratified TP 4065b (Simple Copy Command).

Signed-off-by: Gollu Appalanaidu <[email protected]>

Author: Gollu Appalanaidu

src/nvme/types.h

@@ -965,7 +965,7 @@ struct nvme_id_ctrl {
 	__u8			icsvscc;
 	__u8			nwpc;
 	__le16			acwu;
-	__u8			rsvd534[2];
+	__le16			ocfs;
 	__le32			sgls;
 	__le32			mnan;
 	__u8			maxdna[16];