cpufreq: governor: Set MIN_LATENCY_MULTIPLIER to 20

Currently MIN_LATENCY_MULTIPLIER is set defined as 100 and so on a system with
transition latency of 1 ms, the minimum sampling time comes to be around 100 ms.
That is quite big if you want to get better performance for your system.

Redefine MIN_LATENCY_MULTIPLIER to 20 so that we can support 20ms sampling rate
for such platforms.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/cpufreq/cpufreq_governor.h

@@ -34,7 +34,7 @@
  */
 #define MIN_SAMPLING_RATE_RATIO			(2)
 #define LATENCY_MULTIPLIER			(1000)
-#define MIN_LATENCY_MULTIPLIER			(100)
+#define MIN_LATENCY_MULTIPLIER			(20)
 #define TRANSITION_LATENCY_LIMIT		(10 * 1000 * 1000)
 
 /* Ondemand Sampling types */