net: Add Intel Topcliff GMAC driver

Add a new driver for the Gigabit Ethernet MAC found on Intel Topcliff
Platform Controller Hub. Tested under 10/100 half/full duplex and 1000
full duplex modes using ping and tftpboot commands.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index b8b0803..3ff86b7 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -46,6 +46,7 @@
 obj-$(CONFIG_DRIVER_AX88796L) += ax88796.o ne2000_base.o
 obj-$(CONFIG_NETCONSOLE) += netconsole.o
 obj-$(CONFIG_NS8382X) += ns8382x.o
+obj-$(CONFIG_PCH_GBE) += pch_gbe.o
 obj-$(CONFIG_PCNET) += pcnet.o
 obj-$(CONFIG_RTL8139) += rtl8139.o
 obj-$(CONFIG_RTL8169) += rtl8169.o