Merge branch 'devlink-locking'

Jakub Kicinski says:

====================
devlink: hold the instance lock in eswitch callbacks

Series number 2 in the effort to hold the devlink instance lock
in call driver callbacks. We have the following drivers using
this API:

 - bnxt, nfp, netdevsim - their own locking is removed / simplified
   by this series; all of them needed a lock to protect from changes
   to the number of VFs while switching modes, now the VF config bus
   callback takes the devlink instance lock via devl_lock();
 - ice - appears not to allow changing modes while SR-IOV enabled,
   so nothing to do there;
 - liquidio - does not contain any locking;
 - octeontx2/af - is very special but at least doesn't have locking
   so doesn't get in the way either;
 - mlx5 has a wealth of locks - I chickened out and dropped the lock
   in the callbacks so that I can leave the driver be, for now.

The last one is obviously not ideal, but I would prefer to transition
the API already as it make take longer.

v2: use a wrapper in mlx5 and extend the comment
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

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