net: mediatek: split ethernet switch code from mtk_eth.c
mtk_eth.c contains not only the ethernet GMAC/DMA driver, but also
some ethernet switch initialization code. As we may add more switch
support in the future, it's better to move them out of mtk_eth.c to
avoid increasing the code complexity.
Since not all switches are supported for a particular board, Kconfig
options are added to allow user to select which switch should be
built into u-boot. If multiple switches are selected, auto-detecting
can also be enabled.
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index e51a917..6f3d63d 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -68,7 +68,7 @@
obj-$(CONFIG_MDIO_MUX_MMIOREG) += mdio_mux_mmioreg.o
obj-$(CONFIG_MDIO_MUX_SANDBOX) += mdio_mux_sandbox.o
obj-$(CONFIG_MDIO_SANDBOX) += mdio_sandbox.o
-obj-$(CONFIG_MEDIATEK_ETH) += mtk_eth.o
+obj-$(CONFIG_MEDIATEK_ETH) += mtk_eth/
obj-$(CONFIG_MPC8XX_FEC) += mpc8xx_fec.o
obj-$(CONFIG_MT7620_ETH) += mt7620-eth.o
obj-$(CONFIG_MT7628_ETH) += mt7628-eth.o