udf: Convert printks to pr_<level>

Use the current logging styles.

Convert a few printks that should have been udf_warn and udf_err.
Coalesce formats.  Add #define pr_fmt.
Move an #include "udfdecls.h" above other includes in udftime.c
so pr_fmt works correctly.  Strip prefixes from conversions as appropriate.
Reorder logging definitions in udfdecl.h

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jan Kara <jack@suse.cz>

fs/udf/directory.c

@@ -201,7 +201,7 @@ struct short_ad *udf_get_fileshortad(uint8_t *ptr, int maxoffset, uint32_t *offs
 	struct short_ad *sa;
 
 	if ((!ptr) || (!offset)) {
-		printk(KERN_ERR "udf: udf_get_fileshortad() invalidparms\n");
+		pr_err("%s: invalidparms\n", __func__);
 		return NULL;
 	}
 
@@ -223,7 +223,7 @@ struct long_ad *udf_get_filelongad(uint8_t *ptr, int maxoffset, uint32_t *offset
 	struct long_ad *la;
 
 	if ((!ptr) || (!offset)) {
-		printk(KERN_ERR "udf: udf_get_filelongad() invalidparms\n");
+		pr_err("%s: invalidparms\n", __func__);
 		return NULL;
 	}