net/mlx5: remove redundant new line in logs

net/mlx5: remove redundant new line in logs

DRV_LOG macro is used to print log messages, one per line.
In several locations this macro is used with redundant '\n' character
at the end of the log message, causing blank lines between log lines.

This patch removes the '\n' character where it is redundant.

Signed-off-by: Dekel Peled <dekelp@mellanox.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>