net: ethernet: sun4i-emac: Allow to enable netif messages
sun4i-emac has the ability to print a number of diagnostic messages using dev_dbg depending on message level settings implemented using netif_msg_* macros. But there's no way to actually enable them. Add the ability to switch diagnostic messages on using either a module parameter debug or ethtool -s <netif> msglvl <flags>. Signed-off-by: Michael Weiser <michael.weiser@gmx.de> Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: netdev@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
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