msm: mpdecision: Increase hotplug delay to 2 sec

Wait at least 2 seconds between hotremoves. Since we're using sched_mc to
try keeping minimal cores online, a 100ms delay might be too little of a
wait between hotplugging/unplugging for efficiency.

The idea for this value was taken from Thalamus' auto_hotplug driver.

Change-Id: I34fbabc75c0e3b54e1c54bffdeec2b3c051f7c08
Signed-off-by: Luis Cruz <ljc2491@gmail.com>
Merge "msm: mpdecision: Increase hotplug delay to 2 sec" into android-4.4