bsp/nuclei: Add initial bsp support for Nuclei HummingBird SoC

Signed-off-by: Huaqi Fang <578567190@qq.com>

bsp/nuclei/hbird_eval/SConscript

@@ -0,0 +1,17 @@
+# for module compiling
+import os
+Import('RTT_ROOT')
+from building import *
+
+cwd = GetCurrentDir()
+objs = []
+list = os.listdir(cwd)
+
+ASFLAGS = ' -I' + cwd
+
+for d in list:
+    path = os.path.join(cwd, d)
+    if os.path.isfile(os.path.join(path, 'SConscript')):
+        objs = objs + SConscript(os.path.join(d, 'SConscript'))
+
+Return('objs')