configs: at91sam9260ek/9g20ek: Update for DT and DM

Update the configuration files to support the device tree and driver
model. The device clock and pins configuration are handled by the
clock and the pinctrl drivers respectively.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/configs/at91sam9g20ek_2mmc_nandflash_defconfig b/configs/at91sam9g20ek_2mmc_nandflash_defconfig
index 6d2bfa1..398be7e 100644
--- a/configs/at91sam9g20ek_2mmc_nandflash_defconfig
+++ b/configs/at91sam9g20ek_2mmc_nandflash_defconfig
@@ -1,6 +1,8 @@
 CONFIG_ARM=y
 CONFIG_ARCH_AT91=y
 CONFIG_TARGET_AT91SAM9260EK=y
+CONFIG_SYS_MALLOC_F_LEN=0x2000
+CONFIG_DEFAULT_DEVICE_TREE="at91sam9g20ek_2mmc"
 CONFIG_SYS_EXTRA_OPTIONS="AT91SAM9G20,AT91SAM9G20EK_2MMC,SYS_USE_NANDFLASH"
 CONFIG_BOOTDELAY=3
 # CONFIG_DISPLAY_BOARDINFO is not set
@@ -18,6 +20,20 @@
 CONFIG_CMD_DHCP=y
 CONFIG_CMD_PING=y
 CONFIG_CMD_FAT=y
+CONFIG_OF_CONTROL=y
+CONFIG_DM=y
+CONFIG_CLK=y
+CONFIG_CLK_AT91=y
+CONFIG_DM_GPIO=y
+CONFIG_AT91_GPIO=y
+CONFIG_DM_MMC=y
+CONFIG_GENERIC_ATMEL_MCI=y
+CONFIG_DM_ETH=y
+CONFIG_MACB=y
+CONFIG_PINCTRL=y
+CONFIG_PINCTRL_AT91=y
+CONFIG_DM_SERIAL=y
+CONFIG_ATMEL_USART=y
 CONFIG_USB=y
+CONFIG_DM_USB=y
 CONFIG_USB_STORAGE=y
-CONFIG_OF_LIBFDT=y