Merge branch 'sfc-refactor-mcdi-filtering-code'

Alex Maftei says:

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sfc: refactor mcdi filtering code

Splitting final bits of the driver code into different files, which
will later be used in another driver for a new product.

This is a continuation to my previous patch series. (three of them)
Refactoring will be concluded with this series, for now.

As instructed, split the renaming and moving into different patches.
Removed stray spaces before tabs... twice.
Minor refactoring was done with the renaming, as explained in the
first patch.
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Signed-off-by: David S. Miller <davem@davemloft.net>