Merge branch 'net-dsa-bcm_sf2-Additional-DT-changes'

Florian Fainelli says:

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net: dsa: bcm_sf2: Additional DT changes

This patch series includes some additional changes to the bcm_sf2 in
order to support the Device Tree firmwares provided on such platforms.
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Signed-off-by: David S. Miller <davem@davemloft.net>