WAN: Add IXP4xx HSS HDLC driver.

Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
diff --git a/drivers/net/wan/Makefile b/drivers/net/wan/Makefile
index cec1681..19d14bc 100644
--- a/drivers/net/wan/Makefile
+++ b/drivers/net/wan/Makefile
@@ -41,6 +41,7 @@
 obj-$(CONFIG_WANXL)		+= wanxl.o
 obj-$(CONFIG_PCI200SYN)		+= pci200syn.o
 obj-$(CONFIG_PC300TOO)		+= pc300too.o
+obj-$(CONFIG_IXP4XX_HSS)	+= ixp4xx_hss.o
 
 clean-files := wanxlfw.inc
 $(obj)/wanxl.o:	$(obj)/wanxlfw.inc