net: Add ethernet support for MIPS Octeon

This patchs adds the ethernet & MDIO driver for the MIPS Octeon II / III
SoC platform. Please note that these drivers are based on the 2013
U-Boot version from Marvell and make use of the platform supported
helper functions for the ethernet functionality, including stuff like
SFP handling.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Ramon Fried <rfried.dev@gmail.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 347fe8a..da56326 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -495,6 +495,13 @@
 	  The MediaTek MT7628 ethernet interface is used on MT7628 and
 	  MT7688 based boards.
 
+config NET_OCTEON
+	bool "MIPS Octeon ethernet support"
+	depends on ARCH_OCTEON
+	help
+	  You must select Y to enable network device support for
+	  MIPS Octeon SoCs. If unsure, say n
+
 config NET_OCTEONTX
 	bool "OcteonTX Ethernet support"
 	depends on ARCH_OCTEONTX