[PATCH -next] net: ethernet: mediatek: fix mtk_eth_soc build errors & warnings

[Randy Dunlap]

From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>

Fix build errors in Mediatek mtk_eth_soc driver.

It looks like these 3 source files were meant to be linked together
since 2 of them are library-like functions,
but they are currently being built as 3 loadable modules.

Fixes these build errors:

  WARNING: modpost: missing MODULE_LICENSE() in drivers/net/ethernet/mediatek/mtk_eth_path.o
  WARNING: modpost: missing MODULE_LICENSE() in drivers/net/ethernet/mediatek/mtk_sgmii.o
  ERROR: "mtk_sgmii_init" [drivers/net/ethernet/mediatek/mtk_eth_soc.ko] undefined!
  ERROR: "mtk_setup_hw_path" [drivers/net/ethernet/mediatek/mtk_eth_soc.ko] undefined!
  ERROR: "mtk_sgmii_setup_mode_force" [drivers/net/ethernet/mediatek/mtk_eth_soc.ko] undefined!
  ERROR: "mtk_sgmii_setup_mode_an" [drivers/net/ethernet/mediatek/mtk_eth_soc.ko] undefined!
  ERROR: "mtk_w32" [drivers/net/ethernet/mediatek/mtk_eth_path.ko] undefined!
  ERROR: "mtk_r32" [drivers/net/ethernet/mediatek/mtk_eth_path.ko] undefined!

This changes the loadable module name from mtk_eth_soc to mtk_eth.
I didn't see a way to leave it as mtk_eth_soc.

Reported-by: kbuild test robot <lkp@xxxxxxxxx>
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Sean Wang <sean.wang@xxxxxxxxxxxx>
Cc: John Crispin <blogic@xxxxxxxxxxx>
Cc: Felix Fietkau <nbd@xxxxxxxxxxx>
Cc: Nelson Chang <nelson.chang@xxxxxxxxxxxx>
---
 drivers/net/ethernet/mediatek/Makefile |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- linux-next-20190604.orig/drivers/net/ethernet/mediatek/Makefile
+++ linux-next-20190604/drivers/net/ethernet/mediatek/Makefile
@@ -3,5 +3,5 @@
 # Makefile for the Mediatek SoCs built-in ethernet macs
 #
 
-obj-$(CONFIG_NET_MEDIATEK_SOC)                 += mtk_eth_soc.o mtk_sgmii.o \
-						  mtk_eth_path.o
+obj-$(CONFIG_NET_MEDIATEK_SOC)                 += mtk_eth.o
+mtk_eth-y := mtk_eth_soc.o mtk_sgmii.o mtk_eth_path.o