Extend mlx5dv_get_qp() to return UAR mapping info. This can allow a
process to share its doorbell access with secondary process by re-mmap
the UAR address on the device and make it accessible as a user space
address.
Signed-off-by: Xueming Li <xuemingl@mellanox.com>
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
[khng: Cherry-picked from rdma-core
d2389b34ccc54aed2cddae13bba06b961b9b5aca]
Change-Id: I368ee0f52e7238c2a0c602edf2864247349a8a52