curl: add 'enable-ares' packageconfig option
This build time option is needed to use the '--dns-interface' runtime
parameter to instruct 'curl' to use a specific interface for DNS
resolution.
Not enabled by default, as it depends on 'c-ares' package from
meta-openembedded (meta-networking).
Signed-off-by: Javier Viguera <javier.viguera@digi.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
(cherry picked from commit
4fe0aa3791db0ee6c85e7a068f69def6e7c0da46)
Signed-off-by: Armin Kuster <akuster808@gmail.com>
