Merge branch 'fec-driver-code-clean'

Fugang Duan says:

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net: fec: driver code clean

The patch series are for fec ethernet driver code clean up, each patch is
independent.
Patch #1,#4,#5 are code clean up.
Patch #2,#3 are for aarch64 platform.
Patch #6 is for i.MX6UL to add lost errata workaround.
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Signed-off-by: David S. Miller <[email protected]>