timekeeping: Fix up read_persistent_clock() breakage on sh

The recent commit "timekeeping: Increase granularity of
read_persistent_clock()" introduced read_persistent_clock()
rework which inadvertently broke the sh conversion:

	arch/sh/kernel/time.c:45: error: passing argument 1 of 'rtc_sh_get_time' from incompatible pointer type
	distcc[13470] ERROR: compile arch/sh/kernel/time.c on sprygo/32 failed
	make[2]: *** [arch/sh/kernel/time.o] Error 1

This trivial fix gets it working again.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
LKML-Reference: <20090824223239.GB20832@linux-sh.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/sh/kernel/time.c

@@ -41,7 +41,7 @@ int (*rtc_sh_set_time)(const time_t) = null_rtc_set_time;
 #ifdef CONFIG_GENERIC_CMOS_UPDATE
 void read_persistent_clock(struct timespec *ts)
 {
-	rtc_sh_get_time(&ts);
+	rtc_sh_get_time(ts);
 }
 
 int update_persistent_clock(struct timespec now)