riscv: ae350: Fix OF_BOARD boot failure

Disable BINMAN_FDT for ae350 boards which don't actually use it.

Fixes: 836eac7c6fe3 ("fdt: Make OF_BOARD a bool option")
Signed-off-by: Rick Chen <rick@andestech.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
diff --git a/configs/ae350_rv64_spl_xip_defconfig b/configs/ae350_rv64_spl_xip_defconfig
index 4f17d5c..f3ace44 100644
--- a/configs/ae350_rv64_spl_xip_defconfig
+++ b/configs/ae350_rv64_spl_xip_defconfig
@@ -18,6 +18,7 @@
 CONFIG_SYS_MONITOR_BASE=0x88000000
 CONFIG_BOOTDELAY=3
 CONFIG_BOARD_EARLY_INIT_F=y
+# CONFIG_BINMAN_FDT is not set
 CONFIG_SYS_PROMPT="RISC-V # "
 CONFIG_CMD_IMLS=y
 CONFIG_CMD_MMC=y