BEFS: logging cleanup

Summary:
 - all printk(KERN_foo converted to pr_foo()
 - add pr_fmt and remove redundant prefixes
 - convert befs_() to va_format (based on patch by Joe Perches)
 - remove non standard %Lu
 - use __func__ for all debugging

[akpm@linux-foundation.org: fix printk warnings, reported by Fengguang]
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Cc: Joe Perches <joe@perches.com>
Cc: Fengguang Wu <fengguang.wu@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/befs/befs.h b/fs/befs/befs.h
index b266428..3a7813a 100644
--- a/fs/befs/befs.h
+++ b/fs/befs/befs.h
@@ -88,8 +88,11 @@
 
 /****************************/
 /* debug.c */
+__printf(2, 3)
 void befs_error(const struct super_block *sb, const char *fmt, ...);
+__printf(2, 3)
 void befs_warning(const struct super_block *sb, const char *fmt, ...);
+__printf(2, 3)
 void befs_debug(const struct super_block *sb, const char *fmt, ...);
 
 void befs_dump_super_block(const struct super_block *sb, befs_super_block *);