net/enic: move arguments into struct
net/enic: move arguments into struct

There are many copy_item functions, all with the same arguments, which
makes it difficult to add/change arguments. Move the arguments into a
struct to help subsequent commits that will add/fix features. Also
remove self-explanatory verbose comments for these local functions.

These changes are purely mechanical and have no impact on
functionalities.

Signed-off-by: Hyong Youb Kim <410cadac1eb3154f1b3752aedc2559ad69f3863e@cisco.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk