buildroot

coreutils: expand list of files moved from /usr/bin to /bin

BusyBox installs kill, link, mktemp, nice and printenv on /bin, so
ensure that coreutils replaces them.

Signed-off-by: Carlos Santos <casantos@datacom.ind.br>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
(cherry picked from commit 443897bce4b01eae98155ac947d3387e6a2f289e)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>