Ethernet driver for the WIZnet W5300 chip

Based on original driver from chip manufacturer, but nearly full rewite.
Tested and used in production with Blackfin BF531 embedded processor.

Signed-off-by: Mike Sinkovsky <msink@permonline.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/wiznet/Makefile b/drivers/net/ethernet/wiznet/Makefile
new file mode 100644
index 0000000..88e0a3e
--- /dev/null
+++ b/drivers/net/ethernet/wiznet/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_WIZNET_W5300) += w5300.o