[PATCH] buildman: Correct CROSS_COMPILE output for sandbox

[Simon Glass]

At present, 'buildman -A sandbox' adds the path containing the
toolchain at present. We can assume that this is in the path and
we don't want to set CROSS_COMPILE=/bin/ so change this to align
with what MakeEnvironment() does.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 tools/buildman/toolchain.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

Applied to u-boot-dm/next, thanks!