netdev: Added KS8842 driver

This is a driver for the Micrel KS8842 ethernet switch.

The supplied code is for driving the KS8842 through the Timberdale FPGA
on the Russellville board, a development board for Intel Atom CPU
in the automotive area.

Signed-off-by: Richard Röjfors <richard.rojfors.ext@mocean-labs.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index f19018d..18c29a8 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -1723,6 +1723,11 @@
 
 	  Please email feedback to <torben.mathiasen@compaq.com>.
 
+config KS8842
+	tristate "Micrel KSZ8842"
+	help
+	  This platform driver is for Micrel KSZ8842 chip.
+
 config VIA_RHINE
 	tristate "VIA Rhine support"
 	depends on NET_PCI && PCI