[MIPS] time: MIPSsim's plat_time_init doesn't need to be irq safe.

It's running early during the bootup process so interrupts are still off.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/mipssim/sim_time.c

@@ -101,9 +101,7 @@ unsigned __init get_c0_compare_int(void)
 
 void __init plat_time_init(void)
 {
-	unsigned int est_freq, flags;
-
-	local_irq_save(flags);
+	unsigned int est_freq;
 
 	/* Set Data mode - binary. */
 	CMOS_WRITE(CMOS_READ(RTC_CONTROL) | RTC_DM_BINARY, RTC_CONTROL);
@@ -114,6 +112,4 @@ void __init plat_time_init(void)
 	       (est_freq % 1000000) * 100 / 1000000);
 
 	cpu_khz = est_freq / 1000;
-
-	local_irq_restore(flags);
 }