Merge branch 'mlxsw-tc-flower-offload-stats'

Jiri Pirko says:

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mlxsw: Add support for TC flower offload statistics

Arkadi says:
This patchset adds support for retrieving TC flower statistics for
offloaded rules, which includes packets count, bytes count and last used
time stamp. Currently The statistics are gathered on a per-rule basis.

This patchset also includes generic allocator for counters.
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Signed-off-by: David S. Miller <davem@davemloft.net>