dynamic_debug: replace if (verbose) pr_info with macro vpr_info

Use vpr_info to declutter code, reduce indenting, and change one
additional pr_info call in ddebug_exec_queries.

Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Acked-by: Jason Baron <jbaron@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>