net: add support for STMicroelectronics Ethernet controllers.

This is the driver for the ST MAC 10/100/1000 on-chip Ethernet
controllers (Synopsys IP blocks).

Driver documentation:
 o http://stlinux.com/drupal/kernel/network/stmmac
Revisions:
 o http://stlinux.com/drupal/kernel/network/stmmac-driver-revisions
Performances:
 o http://stlinux.com/drupal/benchmarks/networking/stmmac

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index f520e3a..ce2eba1 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -2483,6 +2483,8 @@
 	  To compile this driver as a module, choose M here. The module
 	  will be called s6gmac.
 
+source "drivers/net/stmmac/Kconfig"
+
 endif # NETDEV_1000
 
 #