sh: remove unused rtc_sh_get/set_time infrastructure

All platforms are now converted to RTC drivers, so this has become
obsolete. The board_time_init() callback still has one caller, but
could otherwise also get killed.

This removes one more usage of the deprecated timespec structure,
which overflows in y2038.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/sh/include/asm/rtc.h

@@ -4,8 +4,6 @@
 
 void time_init(void);
 extern void (*board_time_init)(void);
-extern void (*rtc_sh_get_time)(struct timespec *);
-extern int (*rtc_sh_set_time)(const time_t);
 
 #define RTC_CAP_4_DIGIT_YEAR	(1 << 0)
 

arch/sh/kernel/time.c

@@ -22,75 +22,6 @@
 #include <asm/clock.h>
 #include <asm/rtc.h>
 
-/* Dummy RTC ops */
-static void null_rtc_get_time(struct timespec *tv)
-{
-	tv->tv_sec = mktime(2000, 1, 1, 0, 0, 0);
-	tv->tv_nsec = 0;
-}
-
-static int null_rtc_set_time(const time_t secs)
-{
-	return 0;
-}
-
-void (*rtc_sh_get_time)(struct timespec *) = null_rtc_get_time;
-int (*rtc_sh_set_time)(const time_t) = null_rtc_set_time;
-
-void read_persistent_clock(struct timespec *ts)
-{
-	rtc_sh_get_time(ts);
-}
-
-#ifdef CONFIG_GENERIC_CMOS_UPDATE
-int update_persistent_clock(struct timespec now)
-{
-	return rtc_sh_set_time(now.tv_sec);
-}
-#endif
-
-static int rtc_generic_get_time(struct device *dev, struct rtc_time *tm)
-{
-	struct timespec tv;
-
-	rtc_sh_get_time(&tv);
-	rtc_time_to_tm(tv.tv_sec, tm);
-	return 0;
-}
-
-static int rtc_generic_set_time(struct device *dev, struct rtc_time *tm)
-{
-	unsigned long secs;
-
-	rtc_tm_to_time(tm, &secs);
-	if ((rtc_sh_set_time == null_rtc_set_time) ||
-	    (rtc_sh_set_time(secs) < 0))
-		return -EOPNOTSUPP;
-
-	return 0;
-}
-
-static const struct rtc_class_ops rtc_generic_ops = {
-	.read_time = rtc_generic_get_time,
-	.set_time = rtc_generic_set_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_data(NULL, "rtc-generic", -1,
-					     &rtc_generic_ops,
-					     sizeof(rtc_generic_ops));
-
-
-	return PTR_ERR_OR_ZERO(pdev);
-}
-device_initcall(rtc_generic_init);
-
 void (*board_time_init)(void);
 
 static void __init sh_late_time_init(void)