idiag: deprecate idiagnl_msg_obj_ops variable in public API
idiag: deprecate idiagnl_msg_obj_ops variable in public API

This internal structure should never have been exposed publically.
It as introduced as public API in v3.2.23.

For now, don't remove it as it would be an API/ABI break.

Fixes: 81d2b1d509d91fe894e4aec0a6a76b0bf75514cd
Acked-by: Thomas Graf <17c2d8920621522552b392f72d8fdb4d1e866b44@suug.ch>
Signed-off-by: Thomas Haller <16e26612e4159990a6b3691e92592e691ff74132@redhat.com>

HolyShitMan/libnl-1,greearb/libnl-ct,baloo/libnl,cfriedt/libnl,greearb/libnl-ct,HolyShitMan/libnl-1,tklauser/libnl,houstar/libnl,honsys/libnl,honsys/libnl,kolyshkin/libnl,claudelee/libnl,dsahern/libnl,kolyshkin/libnl,tgraf/libnl,mshirley/libnl,claudelee/libnl,tgraf/libnl,congwang/libnl,tklauser/libnl,congwang/libnl,thom311/libnl,cfriedt/libnl,tklauser/libnl,kolyshkin/libnl,cfriedt/libnl,HolyShitMan/libnl-1,kolyshkin/libnl,greearb/libnl-ct,congwang/libnl,mshirley/libnl,HolyShitMan/libnl-1,tgraf/libnl,houstar/libnl,honsys/libnl,houstar/libnl,dsahern/libnl,cfriedt/libnl,mshirley/libnl,congwang/libnl,houstar/libnl,tgraf/libnl,mshirley/libnl,thom311/libnl,claudelee/libnl,thom311/libnl,claudelee/libnl,tklauser/libnl,honsys/libnl,baloo/libnl,dsahern/libnl,baloo/libnl,baloo/libnl,dsahern/libnl