xtensa: Add support for the Sonic Ethernet device for the XT2000 board.

Add support for the on-board Sonic Ethernet device for the XT2000
evaluation board.

Signed-off-by: Chris Zankel <chris@zankel.net>
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index fa2510b..f19acf8 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -227,6 +227,8 @@
 obj-$(CONFIG_MLX4_CORE) += mlx4/
 obj-$(CONFIG_ENC28J60) += enc28j60.o
 
+obj-$(CONFIG_XTENSA_XT2000_SONIC) += xtsonic.o
+
 obj-$(CONFIG_MACB) += macb.o
 
 obj-$(CONFIG_ARM) += arm/