coreutils: disable ACL as we do not depend on it

coreutils: disable ACL as we do not depend on it

Coreutils does not depend on ACL but also does not disable it. Effect is
that from time to time I have a copy in sstate-cache which got built
with ACL and then I have problem while building images or sdk:

| Collected errors:
|  * satisfy_dependencies_for: Cannot satisfy the following dependencies for packagegroup-core-standalone-hhvm-sdk-target:
|  *    libacl1 (>= 2.2.51) *
|  * opkg_install_cmd: Cannot install package packagegroup-core-standalone-hhvm-sdk-target.

(From OE-Core rev: d54141130475b091358807dce17ba8d244d33ea1)

Signed-off-by: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>