net: Add Aeroflex Gaisler 10/100/1G Ethernet MAC driver

Adds device driver for Aeroflex Gaisler 10/100 and 10/100/1G Ethernet
MAC IP cores.

Signed-off-by: Kristoffer Glembo <kristoffer@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index 622cfd4..4788862 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -250,6 +250,7 @@
 obj-$(CONFIG_MLX4_CORE) += mlx4/
 obj-$(CONFIG_ENC28J60) += enc28j60.o
 obj-$(CONFIG_ETHOC) += ethoc.o
+obj-$(CONFIG_GRETH) += greth.o
 
 obj-$(CONFIG_XTENSA_XT2000_SONIC) += xtsonic.o