sis*: Move the Silicon Integrated Systems (SiS) drivers

Move the SiS drivers into drivers/net/ethernet/sis/ and make the
necessary Kconfig and Makefile changes

CC: Daniele Venzano <venza@brownhat.org>
CC: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/drivers/net/ethernet/Makefile b/drivers/net/ethernet/Makefile
index 7e7a319..1f45ec9 100644
--- a/drivers/net/ethernet/Makefile
+++ b/drivers/net/ethernet/Makefile
@@ -33,6 +33,7 @@
 obj-$(CONFIG_NET_VENDOR_RACAL) += racal/
 obj-$(CONFIG_NET_VENDOR_REALTEK) += realtek/
 obj-$(CONFIG_NET_VENDOR_SEEQ) += seeq/
+obj-$(CONFIG_NET_VENDOR_SIS) += sis/
 obj-$(CONFIG_SFC) += sfc/
 obj-$(CONFIG_NET_VENDOR_SGI) += sgi/
 obj-$(CONFIG_NET_VENDOR_SMSC) += smsc/