jffs2: Convert printks to pr_<level>

Use the more current logging style.

Coalesce formats, align arguments.
Convert uses of embedded function names to %s, __func__.

A couple of long line checkpatch errors I don't care about exist.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
diff --git a/fs/jffs2/background.c b/fs/jffs2/background.c
index 26ce06c..63dafc6 100644
--- a/fs/jffs2/background.c
+++ b/fs/jffs2/background.c
@@ -42,7 +42,8 @@
 
 	tsk = kthread_run(jffs2_garbage_collect_thread, c, "jffs2_gcd_mtd%d", c->mtd->index);
 	if (IS_ERR(tsk)) {
-		printk(KERN_WARNING "fork failed for JFFS2 garbage collect thread: %ld\n", -PTR_ERR(tsk));
+		pr_warn("fork failed for JFFS2 garbage collect thread: %ld\n",
+			-PTR_ERR(tsk));
 		complete(&c->gc_thread_exit);
 		ret = PTR_ERR(tsk);
 	} else {
@@ -152,7 +153,7 @@
 
 		jffs2_dbg(1, "%s(): pass\n", __func__);
 		if (jffs2_garbage_collect_pass(c) == -ENOSPC) {
-			printk(KERN_NOTICE "No space for garbage collection. Aborting GC thread\n");
+			pr_notice("No space for garbage collection. Aborting GC thread\n");
 			goto die;
 		}
 	}