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/Kconfig b/drivers/net/ethernet/Kconfig
index 9754247..b15b1e2 100644
--- a/drivers/net/ethernet/Kconfig
+++ b/drivers/net/ethernet/Kconfig
@@ -42,6 +42,7 @@
 source "drivers/net/ethernet/racal/Kconfig"
 source "drivers/net/ethernet/realtek/Kconfig"
 source "drivers/net/ethernet/seeq/Kconfig"
+source "drivers/net/ethernet/sis/Kconfig"
 source "drivers/net/ethernet/sfc/Kconfig"
 source "drivers/net/ethernet/sgi/Kconfig"
 source "drivers/net/ethernet/smsc/Kconfig"