Merge branch 'fec-next'

Fugang Duan says:

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net: fec: driver code clean and bug fix

The patch serial include code clean and bug fix:
Patch#1: avoid dummy operation during suspend/resume test.
Patch#2: bug fix for i.MX6SX SOC that clean all interrupt events during MAC initial process.
Patch#3: before phy device link status is up, only enable MDIO bus interrupt.

V2:
- Modify the comment form from David's suggestion.
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Signed-off-by: David S. Miller <davem@davemloft.net>