When mdio_register fails, mdio_free should be called on the mdiodev that
was previously allocated with mdio_alloc.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>

strncpy() simply bails out when copying a source string whose size
exceeds the destination string size, potentially leaving the destination
string unterminated.

One possible way to address is to pass MDIO_NAME_LEN - 1 and a
previously zero-initialized destination string, but this is more
difficult to maintain.

The chosen alternative is to use strlcpy(), which properly limits the
copy len in the (srclen >= size) case to "size - 1", and which is also
more efficient than the strncpy() byte-by-byte implementation by using
memcpy. The destination string returned by strlcpy() is always NULL
terminated.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>

Many Ethernet drivers still use the legacy miiphy API to register their
mdio interface for access to the mdio commands.

This semantic patch will convert the drivers from the legacy adapter API
to the more modern alloc/register API.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>