Some host commands need to call other host commands: For example, "mkimage" from host-uboot-tools needs to run "dtc". This would fail or call system commands without adding the host bin dir to PATH. Signed-off-by: Fiona Klute <fiona.klute@gmx.de> [Julien: use python functions/constants to build path] Signed-off-by: Julien Olivain <ju.o@free.fr> (cherry picked from commit befb6ae81d274342d316061a648c2f276e44db23) Signed-off-by: Thomas Perale <thomas.perale@mind.be>