bcache: Style/checkpatch fixes

Took out some nested functions, and fixed some more checkpatch
complaints.

Signed-off-by: Kent Overstreet <koverstreet@google.com>
Cc: linux-bcache@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/drivers/md/bcache/stats.c b/drivers/md/bcache/stats.c
index bf6cf95..64e6794 100644
--- a/drivers/md/bcache/stats.c
+++ b/drivers/md/bcache/stats.c
@@ -95,7 +95,8 @@
 
 static void scale_accounting(unsigned long data);
 
-void bch_cache_accounting_init(struct cache_accounting *acc, struct closure *parent)
+void bch_cache_accounting_init(struct cache_accounting *acc,
+			       struct closure *parent)
 {
 	kobject_init(&acc->total.kobj,		&bch_stats_ktype);
 	kobject_init(&acc->five_minute.kobj,	&bch_stats_ktype);