net: sh-eth: Add to Kconfig and convert

This adds SH_ETHER to drivers/net/Kconfig and convert to Kconfig.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/configs/sh7763rdp_defconfig b/configs/sh7763rdp_defconfig
index 693a873..a211e4c 100644
--- a/configs/sh7763rdp_defconfig
+++ b/configs/sh7763rdp_defconfig
@@ -26,6 +26,7 @@
 CONFIG_CMD_JFFS2=y
 CONFIG_ENV_IS_IN_FLASH=y
 CONFIG_MTD_NOR_FLASH=y
-CONFIG_PHYLIB=y
+CONFIG_NETDEVICES=y
+CONFIG_SH_ETHER=y
 CONFIG_SCIF_CONSOLE=y
 CONFIG_USE_PRIVATE_LIBGCC=y