mips: convert to clocksource_register_hz/khz

This converts the mips clocksources to use clocksource_register_hz/khz

CC: Ralf Baechle <ralf@linux-mips.org>
CC: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: John Stultz <johnstul@us.ibm.com>
diff --git a/arch/mips/loongson/common/cs5536/cs5536_mfgpt.c b/arch/mips/loongson/common/cs5536/cs5536_mfgpt.c
index 8c807c9..0cb1b97 100644
--- a/arch/mips/loongson/common/cs5536/cs5536_mfgpt.c
+++ b/arch/mips/loongson/common/cs5536/cs5536_mfgpt.c
@@ -201,8 +201,6 @@
 	.rating = 120, /* Functional for real use, but not desired */
 	.read = mfgpt_read,
 	.mask = CLOCKSOURCE_MASK(32),
-	.mult = 0,
-	.shift = 22,
 };
 
 int __init init_mfgpt_clocksource(void)
@@ -210,8 +208,7 @@
 	if (num_possible_cpus() > 1)	/* MFGPT does not scale! */
 		return 0;
 
-	clocksource_mfgpt.mult = clocksource_hz2mult(MFGPT_TICK_RATE, 22);
-	return clocksource_register(&clocksource_mfgpt);
+	return clocksource_register_hz(&clocksource_mfgpt, MFGPT_TICK_RATE);
 }
 
 arch_initcall(init_mfgpt_clocksource);