backports: update backport/backport-include/net/netlink.h

Add new macros introduced from v5.1-rc1
   23323289b154 netlink: reduce NLA_POLICY_NESTED{,_ARRAY} arguments

v3: Fix v4.20 compilation error

Signed-off-by: AceLan Kao <acelan.kao@canonical.com>
1 file changed