nds32: Support AE3XX platform.

Support Andestech AE3xx platform: serial, timer device tree flow.

Signed-off-by: rick <rick@andestech.com>
diff --git a/board/AndesTech/adp-ae3xx/Kconfig b/board/AndesTech/adp-ae3xx/Kconfig
new file mode 100644
index 0000000..8ec69d6
--- /dev/null
+++ b/board/AndesTech/adp-ae3xx/Kconfig
@@ -0,0 +1,18 @@
+if TARGET_ADP_AE3XX
+
+config SYS_CPU
+	default "n1213"
+
+config SYS_BOARD
+	default "adp-ae3xx"
+
+config SYS_VENDOR
+	default "AndesTech"
+
+config SYS_SOC
+	default "ae3xx"
+
+config SYS_CONFIG_NAME
+	default "adp-ae3xx"
+
+endif