[Swan-commit] Changes to ref refs/heads/master

[Andrew Cagney]

New commits:
commit e87afb017dd696061a1208a2a5d24bd5df9bc6c4
Author: Andrew Cagney <cagney at gnu.org>
Date:   Sat Feb 22 08:56:06 2020 -0500

    kernel: cleanup iface_dev
    
    add create_iface_dev(), use refcnt_t, make interface_dev static,
    add kernel_ops.offload_supported.