cpufreq: db8500: set CPUFREQ_CONST_LOOPS

As ux500 is being converted to timer based delay loops, and the timer
used is not depending on CPUs clock frequency, set cpufreq_driver flag
CPUFREQ_CONST_LOOPS to prevent cpufreq rescaling loops_for_jiffies.
Acked-by: NJohn Stultz <john.stultz@linaro.org>
Acked-by: NRafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: NFabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

drivers/cpufreq/dbx500-cpufreq.c

@@ -125,7 +125,7 @@ static int __cpuinit dbx500_cpufreq_init(struct cpufreq_policy *policy)
 }
 
 static struct cpufreq_driver dbx500_cpufreq_driver = {
-	.flags  = CPUFREQ_STICKY,
+	.flags  = CPUFREQ_STICKY | CPUFREQ_CONST_LOOPS,
 	.verify = dbx500_cpufreq_verify_speed,
 	.target = dbx500_cpufreq_target,
 	.get    = dbx500_cpufreq_getspeed,