IB/mlx4: Add support for memory management extensions and local DMA L_Key
Roland Dreier authored

Add support for the following operations to mlx4 when device firmware
supports them:

 - Send with invalidate and local invalidate send queue work requests;
 - Allocate/free fast register MRs;
 - Allocate/free fast register MR page lists;
 - Fast register MR send queue work requests;
 - Local DMA L_Key.
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
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