buildroot

graph-depends: rename pkgutil.py to brpkgutil.py

pkgutil.py is also part of Python itself. Placing pkgutil.py as is
in a folder with other scripts that require original pkgutil will
break them. This is the case with scanpypi. So rename pkgutil.py
to brpkgutil.py to avoid naming collision.

Fixes: https://bugs.busybox.net/show_bug.cgi?id=9766

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
(cherry picked from commit 3b627c89dc8adf8c60efd773935bf66004e8433d)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>