configs: ax25-ae350: Separate ax25-ae350 for RV32/64I.

Separate ax25-ae350 from one to two for
32 and 64 bit individually. And also select
different dts for 32 and 64 bit.

Signed-off-by: Rick Chen <rick@andestech.com>
Cc: Greentime Hu <greentime@andestech.com>
diff --git a/configs/ax25-ae350_64_defconfig b/configs/ax25-ae350_64_defconfig
new file mode 100644
index 0000000..b250d3f
--- /dev/null
+++ b/configs/ax25-ae350_64_defconfig
@@ -0,0 +1,37 @@
+CONFIG_RISCV=y
+CONFIG_SYS_TEXT_BASE=0x00000000
+CONFIG_TARGET_AX25_AE350=y
+CONFIG_ARCH_RV64I=y
+CONFIG_DISTRO_DEFAULTS=y
+CONFIG_NR_DRAM_BANKS=2
+CONFIG_FIT=y
+CONFIG_BOOTDELAY=3
+CONFIG_BOARD_EARLY_INIT_F=y
+CONFIG_SYS_PROMPT="RISC-V # "
+CONFIG_CMD_IMLS=y
+CONFIG_CMD_MMC=y
+CONFIG_CMD_SF=y
+CONFIG_CMD_SF_TEST=y
+# CONFIG_CMD_SETEXPR is not set
+CONFIG_BOOTP_PREFER_SERVERIP=y
+CONFIG_CMD_CACHE=y
+CONFIG_OF_BOARD=y
+CONFIG_DEFAULT_DEVICE_TREE="ae350_64"
+CONFIG_ENV_IS_IN_SPI_FLASH=y
+CONFIG_NET_RANDOM_ETHADDR=y
+CONFIG_MMC=y
+CONFIG_FTSDC010=y
+CONFIG_FTSDC010_SDIO=y
+CONFIG_MTD_NOR_FLASH=y
+CONFIG_FLASH_CFI_DRIVER=y
+CONFIG_CFI_FLASH=y
+CONFIG_SYS_FLASH_USE_BUFFER_WRITE=y
+CONFIG_SYS_FLASH_CFI=y
+CONFIG_SPI_FLASH=y
+CONFIG_SPI_FLASH_MACRONIX=y
+CONFIG_FTMAC100=y
+CONFIG_BAUDRATE=38400
+CONFIG_SYS_NS16550=y
+CONFIG_SPI=y
+CONFIG_ATCSPI200_SPI=y
+CONFIG_ATCPIT100_TIMER=y