Merge branch 'mvpp2-jumbo-frames-support'

Antoine Tenart says:

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net: mvpp2: jumbo frames support

This series enable jumbo frames support in the Marvell PPv2 driver. The
first 2 patches rework the buffer management, then two patches prepare for
the final patch which adds the jumbo frames support into the driver.

This is based on top of net-next, and was tested on a mcbin.

Thanks!
Antoine

Since v1:
  - Improved the Tx FIFO initialization comment.
  - Improved the pool sanity check in mvpp2_bm_pool_use().
  - Fixed pool related comments.
  - Cosmetic fixes (used BIT() whenever possible).
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Signed-off-by: David S. Miller <davem@davemloft.net>