tools: moveconfig: check directory location before compilers
We must ensure this tool is run from the top of source directory
before calling update_cross_compile(). Otherwise, the following
exception is thrown:
Traceback (most recent call last):
File "./moveconfig.py", line 918, in <module>
main()
File "./moveconfig.py", line 908, in main
update_cross_compile()
File "./moveconfig.py", line 292, in update_cross_compile
for arch in os.listdir('arch'):
OSError: [Errno 2] No such file or directory: 'arch'
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>