x86: qemu: Convert to use driver model eth

Move to driver model for ETH (e1000) on QEMU.
Signed-off-by: NBin Meng <bmeng.cn@gmail.com>
Acked-by: NSimon Glass <sjg@chromium.org>

board/emulation/qemu-x86/Makefile

@@ -4,4 +4,4 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-obj-y	+= qemu-x86.o start.o
+obj-y	+= start.o

board/emulation/qemu-x86/qemu-x86.c

-/*
- * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#include <common.h>
-#include <netdev.h>
-
-int board_eth_init(bd_t *bis)
-{
-	return pci_eth_init(bis);
-}

configs/qemu-x86_defconfig

@@ -15,7 +15,7 @@ CONFIG_CMD_BOOTSTAGE=y
 CONFIG_OF_CONTROL=y
 CONFIG_CPU=y
 CONFIG_SPI_FLASH=y
-CONFIG_NETDEVICES=y
+CONFIG_DM_ETH=y
 CONFIG_E1000=y
 CONFIG_DM_PCI=y
 CONFIG_DM_RTC=y