Merge branch 'hsilicon'

Zhangfei Gao says:

====================
add hix5hd2 mac driver

v4:
Update indent
Use usleep_range instead of udelay

v3:
Remove .ndo_get_stats as mentioned by Tobias
Add __le32 conversion pointed by Mark

v2:
Update binding accoring to Sergei comments
Update descriptor as Arnd's suggestion
====================

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