IB/rxe: Remove a pointless indirection layer

IB/rxe: Remove a pointless indirection layer

Neither rxe->ifc_ops nor any of the function pointers in struct
struct rxe_ifc_ops ever change. Hence remove the rxe->ifc_ops
indirection mechanism.

Signed-off-by: Bart Van Assche <[email protected]>
Reviewed-by: Leon Romanovsky <[email protected]>
Reviewed-by: Andrew Boyer <[email protected]>
Cc: Moni Shoua <[email protected]>
Signed-off-by: Doug Ledford <[email protected]>