Fix the checkpatch warning as below:
  WARNING: Prefer netdev_err(netdev, ... then dev_err(dev, ... then pr_err(...  to printk(KERN_ERR ...
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
  *     1.13    Nobuhiro Iwamatsu: Updata driver.
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/module.h>
 #include <linux/err.h>
 #include <linux/rtc.h>
                tm.tm_year      = 2000 - 1900;
 
                rs5c313_rtc_set_time(NULL, &tm);
-               printk(KERN_ERR "RICHO RS5C313: invalid value, resetting to "
-                               "1 Jan 2000\n");
+               pr_err("invalid value, resetting to 1 Jan 2000\n");
        }
        RS5C313_CEDISABLE;
        ndelay(700);            /* CE:L */