use pr_debug for debug printk.

Signed-off-by: Dave Young <hidave.darkstar@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

kernel/printk.c

@@ -219,7 +219,7 @@ static int __init boot_delay_setup(char *str)
 	if (boot_delay > 10 * 1000)
 		boot_delay = 0;
 
-	printk(KERN_DEBUG "boot_delay: %u, preset_lpj: %ld, lpj: %lu, "
+	pr_debug("boot_delay: %u, preset_lpj: %ld, lpj: %lu, "
 		"HZ: %d, loops_per_msec: %llu\n",
 		boot_delay, preset_lpj, lpj, HZ, loops_per_msec);
 	return 1;