ARM: mxc: update clock source registration

In d7e81c2 (clocksource: Add clocksource_register_hz/khz interface) new
interfaces were added which simplify (and optimize) the selection of the
divisor shift/mult constants.  Switch over to using this new interface.

Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/plat-mxc/epit.c

@@ -93,17 +93,14 @@ static struct clocksource clocksource_epit = {
 	.rating		= 200,
 	.read		= epit_read,
 	.mask		= CLOCKSOURCE_MASK(32),
-	.shift		= 20,
 	.flags		= CLOCK_SOURCE_IS_CONTINUOUS,
 };
 
 static int __init epit_clocksource_init(struct clk *timer_clk)
 {
 	unsigned int c = clk_get_rate(timer_clk);
 
-	clocksource_epit.mult = clocksource_hz2mult(c,
-					clocksource_epit.shift);
-	clocksource_register(&clocksource_epit);
+	clocksource_register_hz(&clocksource_epit, c);
 
 	return 0;
 }

arch/arm/plat-mxc/time.c

@@ -120,7 +120,6 @@ static struct clocksource clocksource_mxc = {
 	.rating		= 200,
 	.read		= mx1_2_get_cycles,
 	.mask		= CLOCKSOURCE_MASK(32),
-	.shift 		= 20,
 	.flags		= CLOCK_SOURCE_IS_CONTINUOUS,
 };
 
@@ -131,9 +130,7 @@ static int __init mxc_clocksource_init(struct clk *timer_clk)
 	if (timer_is_v2())
 		clocksource_mxc.read = v2_get_cycles;
 
-	clocksource_mxc.mult = clocksource_hz2mult(c,
-					clocksource_mxc.shift);
-	clocksource_register(&clocksource_mxc);
+	clocksource_register_hz(&clocksource_mxc, c);
 
 	return 0;
 }