kernel/workqueue.c: pr_warning/pr_warn & printk/pr_info

This commit did an incorrect printk->pr_info conversion. If we were
converting to pr_info() we should lose the log_level parameter. The problem is
that this is called (indirectly) by show_regs_print_info(), which is called
with various log_levels (from _INFO clear to _EMERG). So we leave it as
a printk() call so the desired log_level is applied.

Not a full revert, as the other half of the patch is correct.
Signed-off-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Signed-off-by: Tejun Heo <tj@kernel.org>

kernel/workqueue.c

@@ -4440,7 +4440,7 @@ void print_worker_info(const char *log_lvl, struct task_struct *task)
 		probe_kernel_read(desc, worker->desc, sizeof(desc) - 1);
 
 	if (fn || name[0] || desc[0]) {
-		pr_info("%sWorkqueue: %s %pf", log_lvl, name, fn);
+		printk("%sWorkqueue: %s %pf", log_lvl, name, fn);
 		if (desc[0])
 			pr_cont(" (%s)", desc);
 		pr_cont("\n");