net: Add support for the OpenCores 10/100 Mbps Ethernet MAC.

This patch adds a platform device driver that supports the OpenCores 10/100
Mbps Ethernet MAC.

The driver expects three resources: one IORESOURCE_MEM resource defines the
memory region for the core's memory-mapped registers while a second
IORESOURCE_MEM resource defines the network packet buffer space. The third
resource, of type IORESOURCE_IRQ, associates an interrupt with the driver.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Acked-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/Kconfig

@@ -972,6 +972,14 @@ config ENC28J60_WRITEVERIFY
 	  Enable the verify after the buffer write useful for debugging purpose.
 	  If unsure, say N.
 
+config ETHOC
+	tristate "OpenCores 10/100 Mbps Ethernet MAC support"
+	depends on NET_ETHERNET
+	select MII
+	select PHYLIB
+	help
+	  Say Y here if you want to use the OpenCores 10/100 Mbps Ethernet MAC.
+
 config SMC911X
 	tristate "SMSC LAN911[5678] support"
 	select CRC32

drivers/net/Makefile

@@ -230,6 +230,7 @@ obj-$(CONFIG_PASEMI_MAC) += pasemi_mac_driver.o
 pasemi_mac_driver-objs := pasemi_mac.o pasemi_mac_ethtool.o
 obj-$(CONFIG_MLX4_CORE) += mlx4/
 obj-$(CONFIG_ENC28J60) += enc28j60.o
+obj-$(CONFIG_ETHOC) += ethoc.o
 
 obj-$(CONFIG_XTENSA_XT2000_SONIC) += xtsonic.o