CVE-2023-54168 RDMA/mlx4: Prevent shift wrapping in set_user_sq_size()

In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx4: Prevent shift wrapping in setusersqsize The ucmd-logsqbbcount variable is controlled by the user so this shift can wrap. Fix it by using checkshloverflow in the same way that it was done in commit 515f60004ed9 "RDMA/hn...