net: aquantia: Convert hw and caps structures to const static pointers

This removes unnecessary structure copying, and prepares the driver for
separate firmware ops table introduction.

We also remove extra copy of capabilities structure (which is const actually)
and also replace it with a const pointer in aq_nic_cfg.
Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/aquantia/atlantic/aq_nic.h

@@ -69,8 +69,7 @@ struct aq_nic_s {
 	unsigned int packet_filter;
 	unsigned int power_state;
 	u8 port;
-	struct aq_hw_ops aq_hw_ops;
-	struct aq_hw_caps_s aq_hw_caps;
+	const struct aq_hw_ops *aq_hw_ops;
 	struct aq_nic_cfg_s aq_nic_cfg;
 	struct timer_list service_timer;
 	struct timer_list polling_timer;