sh: register the rtc-generic platform device properly.

The device registration was accidentally omitted, add it back in. Do some
basic device probing as well, so this doesn't show up for platforms that
tie in to the RTC interface properly.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/kernel/time_32.c

@@ -3,7 +3,7 @@
  *
  *  Copyright (C) 1999  Tetsuya Okada & Niibe Yutaka
  *  Copyright (C) 2000  Philipp Rumpf <prumpf@tux.org>
- *  Copyright (C) 2002 - 2008  Paul Mundt
+ *  Copyright (C) 2002 - 2009  Paul Mundt
  *  Copyright (C) 2002  M. R. Brown  <mrbrown@linux-sh.org>
  *
  *  Some code taken from i386 version.
@@ -68,6 +68,21 @@ int set_rtc_time(struct rtc_time *tm)
 }
 EXPORT_SYMBOL(set_rtc_time);
 
+static int __init rtc_generic_init(void)
+{
+	struct platform_device *pdev;
+
+	if (rtc_sh_get_time == null_rtc_get_time)
+		return -ENODEV;
+
+	pdev = platform_device_register_simple("rtc-generic", -1, NULL, 0);
+	if (IS_ERR(pdev))
+		return PTR_ERR(pdev);
+
+	return 0;
+}
+module_init(rtc_generic_init);
+
 #ifndef CONFIG_GENERIC_TIME
 void do_gettimeofday(struct timeval *tv)
 {