ramips: rename ethernet driver folder to the same one that upstream uses

Preparation for sharing offload code with the mediatek target through
generic files/

Signed-off-by: Felix Fietkau <nbd@nbd.name>

target/linux/ramips/patches-4.14/0090-ethernet.patch

@@ -1,41 +0,0 @@
-From b6f779ea9c329451b89404583b45b9eb00155b32 Mon Sep 17 00:00:00 2001
-From: John Crispin <blogic@openwrt.org>
-Date: Wed, 18 Nov 2015 03:58:26 +0100
-Subject: [PATCH 510/513] net-next: mediatek: add Kconfig and Makefile
-
-This patch adds the Makefile and Kconfig required to make the driver build.
-
-Signed-off-by: John Crispin <blogic@openwrt.org>
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
-Signed-off-by: Michael Lee <igvtee@gmail.com>
----
- drivers/net/ethernet/Kconfig           |    1 +
- drivers/net/ethernet/Makefile          |    1 +
- drivers/net/ethernet/mtk/Kconfig  |   62 ++++++++++++++++++++++++++++++++
- drivers/net/ethernet/mtk/Makefile |   20 +++++++++++
- 4 files changed, 84 insertions(+)
- create mode 100644 drivers/net/ethernet/mtk/Kconfig
- create mode 100644 drivers/net/ethernet/mtk/Makefile
-
---- a/drivers/net/ethernet/Kconfig
-+++ b/drivers/net/ethernet/Kconfig
-@@ -110,7 +110,7 @@ config LANTIQ_ETOP
- 	  Support for the MII0 inside the Lantiq SoC
- 
- source "drivers/net/ethernet/marvell/Kconfig"
--source "drivers/net/ethernet/mediatek/Kconfig"
-+source "drivers/net/ethernet/mtk/Kconfig"
- source "drivers/net/ethernet/mellanox/Kconfig"
- source "drivers/net/ethernet/micrel/Kconfig"
- source "drivers/net/ethernet/microchip/Kconfig"
---- a/drivers/net/ethernet/Makefile
-+++ b/drivers/net/ethernet/Makefile
-@@ -51,7 +51,7 @@ obj-$(CONFIG_JME) += jme.o
- obj-$(CONFIG_KORINA) += korina.o
- obj-$(CONFIG_LANTIQ_ETOP) += lantiq_etop.o
- obj-$(CONFIG_NET_VENDOR_MARVELL) += marvell/
--obj-$(CONFIG_NET_VENDOR_MEDIATEK) += mediatek/
-+obj-$(CONFIG_NET_VENDOR_MEDIATEK) += mtk/
- obj-$(CONFIG_NET_VENDOR_MELLANOX) += mellanox/
- obj-$(CONFIG_NET_VENDOR_MICREL) += micrel/
- obj-$(CONFIG_NET_VENDOR_MICROCHIP) += microchip/