Merge branch 'hns-deferred-probe'

lipeng says:

====================
net: hns: bug fix for HNS driver

This patchset add support defered dsaf probe when mdio and
mbigen module is not insmod.

For more details, please refer to individual patch.

change log:
V4 - > V5:
1. Float on net-next;
2. Delete patch "net: hns: fixed bug that skb used after kfree"
   from this patchset;

V3 -> V4:
1. Delete redundant commit message;
2. Add Reviewed-by: Matthias Brugger <mbrugger@suse.com>;

V2 -> V3:
1. Check return value when  platform_get_irq in hns_rcb_get_cfg;

V1 -> V2:
1. Return appropriate errno in hns_mac_register_phy;
====================

Signed-off-by: David S. Miller <davem@davemloft.net>