Fix the internal call to buildstats.sh by also providing
the buildstats folder location in the system, which might
differ from the default location.
(From OE-Core rev: 9f4ee2ee8712528ac51ef4ecd17ccde737e8b21d)
Signed-off-by: Luis Martins <luis.martins@criticaltechworks.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>