smc91111: add write_hwaddr

Add smc_write_hwaddr() to set mac address.
Clear dev before use.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
1 file changed