net: mscc: ocelot: use DIV_ROUND_UP helper in ocelot_port_inject_frame
This looks a bit nicer than the open-coded "(x + 3) % 4" idiom. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> (cherry picked from commit 5f016f42 ) Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> [Xulin: Original patch taken from https://github.com/vladimiroltean/linux/commits/felix-dsa-tag-vlan-stable] Signed-off-by: Xulin Sun <xulin.sun@windriver.com>
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