MN10300: Use clocksource_register_hz()

clocksource_register_hz() calculates the shift/mult pair for the
clocksource. Remove the mn10300 duplicate implementation.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: John Stultz <johnstul@us.ibm.com>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Cc: Mark Salter <msalter@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
diff --git a/arch/mn10300/kernel/csrc-mn10300.c b/arch/mn10300/kernel/csrc-mn10300.c
index ba2f0c4..45644cf 100644
--- a/arch/mn10300/kernel/csrc-mn10300.c
+++ b/arch/mn10300/kernel/csrc-mn10300.c
@@ -29,7 +29,6 @@
 int __init init_clocksource(void)
 {
 	startup_timestamp_counter();
-	clocksource_set_clock(&clocksource_mn10300, MN10300_TSCCLK);
-	clocksource_register(&clocksource_mn10300);
+	clocksource_register_hz(&clocksource_mn10300, MN10300_TSCCLK);
 	return 0;
 }