mm: convert printk(KERN_<LEVEL> to pr_<level>

Most of the mm subsystem uses pr_<level> so make it consistent.

Miscellanea:

 - Realign arguments
 - Add missing newline to format
 - kmemleak-test.c has a "kmemleak: " prefix added to the
   "Kmemleak testing" logging message via pr_fmt

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Tejun Heo <tj@kernel.org>	[percpu]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/nobootmem.c b/mm/nobootmem.c
index 99feb2b..bd05a70 100644
--- a/mm/nobootmem.c
+++ b/mm/nobootmem.c
@@ -288,7 +288,7 @@
 	/*
 	 * Whoops, we cannot satisfy the allocation request.
 	 */
-	printk(KERN_ALERT "bootmem alloc of %lu bytes failed!\n", size);
+	pr_alert("bootmem alloc of %lu bytes failed!\n", size);
 	panic("Out of memory");
 	return NULL;
 }
@@ -360,7 +360,7 @@
 	if (ptr)
 		return ptr;
 
-	printk(KERN_ALERT "bootmem alloc of %lu bytes failed!\n", size);
+	pr_alert("bootmem alloc of %lu bytes failed!\n", size);
 	panic("Out of memory");
 	return NULL;
 }