configs: sama5d2_xplained: enable CONFIG_DM_ETH

Enable CONFIG_DM_ETH to make MACB to support driver model.

Because the USB Ether doesn't support driver model so far,
remove this feature.
Signed-off-by: NWenyou Yang <wenyou.yang@atmel.com>

configs/sama5d2_xplained_mmc_defconfig

@@ -48,6 +48,8 @@ CONFIG_MMC_SDHCI_ATMEL=y
 CONFIG_DM_SPI_FLASH=y
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_ATMEL=y
+CONFIG_DM_ETH=y
+CONFIG_MACB=y
 CONFIG_PINCTRL=y
 CONFIG_PINCTRL_AT91PIO4=y
 CONFIG_DM_SERIAL=y

configs/sama5d2_xplained_spiflash_defconfig

@@ -47,6 +47,8 @@ CONFIG_MMC_SDHCI_ATMEL=y
 CONFIG_DM_SPI_FLASH=y
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_ATMEL=y
+CONFIG_DM_ETH=y
+CONFIG_MACB=y
 CONFIG_PINCTRL=y
 CONFIG_PINCTRL_AT91PIO4=y
 CONFIG_DM_SERIAL=y

include/configs/sama5d2_xplained.h

@@ -38,21 +38,10 @@
 /* NAND flash */
 #undef CONFIG_CMD_NAND
 
-/* USB device */
-#define CONFIG_USB_ETHER
-#define CONFIG_USB_ETH_RNDIS
-#define CONFIG_USBNET_MANUFACTURER      "Atmel SAMA5D2 XPlained"
-
 /* I2C */
 #define AT24MAC_ADDR		0x5c
 #define AT24MAC_REG		0x9a
 
-/* Ethernet Hardware */
-#define CONFIG_MACB
-#define CONFIG_RMII
-#define CONFIG_NET_RETRY_COUNT		20
-#define CONFIG_MACB_SEARCH_PHY
-
 /* LCD */
 
 #ifdef CONFIG_LCD