tools: genboardscfg: move buildman path to first

To system which has kconfiglib installed, genboardscfg will
use system kconfiglib, we need it use U-Boot owned version,
so move the buildman path to first.

Signed-off-by: Peng Fan <[email protected]>
Cc: Masahiro Yamada <[email protected]>
Cc: Simon Glass <[email protected]>
Cc: Tom Rini <[email protected]>
Acked-by: Masahiro Yamada <[email protected]>
Reviewed-by: Simon Glass <[email protected]>

tools/genboardscfg.py

@@ -24,7 +24,7 @@
 import tempfile
 import time
 
-sys.path.append(os.path.join(os.path.dirname(__file__), 'buildman'))
+sys.path.insert(1, os.path.join(os.path.dirname(__file__), 'buildman'))
 import kconfiglib
 
 ### constant variables ###