sh_eth: Move the Renesas SuperH driver

Move the Renesas driver into drivers/net/ethernet/renesas/ and make
the necessary Kconfig and Makefile changes.

CC: Yoshihiro Shimoda <yoshihiro.shirmoda.uh@renesas.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/drivers/net/ethernet/renesas/Makefile b/drivers/net/ethernet/renesas/Makefile
new file mode 100644
index 0000000..1c278a8
--- /dev/null
+++ b/drivers/net/ethernet/renesas/Makefile
@@ -0,0 +1,5 @@
+#
+# Makefile for the Renesas device drivers.
+#
+
+obj-$(CONFIG_SH_ETH) += sh_eth.o