fakeroot: depend on acl

fakeroot: depend on acl

Recent versions of fakeroot have grown support for acl. We don't really
need this since we don't use acls in Buildroot. However, it turns out
that "cp -a" does something funky with acls, with the result that
fakeroot without acl support looses the ownership and permissions on
the copied file. "cp -a" may be (is even likely to be) used in a
BR2_ROOTFS_POST_FAKEROOT_SCRIPT, so we need to support this.

Note that host-acl itself depends on host-attr, so this pulls in two
extra packages in each build. The impact on build time is about 10s.

Cc: Andreas Naumann <dev@andin.de>
Cc: Maxime Hadjinlian <maxime.hadjinlian@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>