rtc: use more standard kernel logging styles

Neaten the logging a bit by adding #define pr_fmt

Miscellanea:

o Remove __FILE__/__func__ uses
o Coalesce formats adding missing spaces
o Align arguments
o (rtc-cmos) Integrated 2 consecutive messages

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Joshua Kinard <kumba@gentoo.org>
Cc: Chanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Tested-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/rtc/rtc-s5m.c

@@ -15,6 +15,8 @@
  *  GNU General Public License for more details.
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/module.h>
 #include <linux/i2c.h>
 #include <linux/bcd.h>
@@ -146,7 +148,7 @@ static int s5m8767_tm_to_data(struct rtc_time *tm, u8 *data)
 	data[RTC_YEAR1] = tm->tm_year > 100 ? (tm->tm_year - 100) : 0;
 
 	if (tm->tm_year < 100) {
-		pr_err("s5m8767 RTC cannot handle the year %d.\n",
+		pr_err("RTC cannot handle the year %d\n",
 		       1900 + tm->tm_year);
 		return -EINVAL;
 	} else {