cpufreq:Upstream changes to cpufreq.c
Summary of commits to cpufreq.c:
- Enable Sibling policy sharing
- Retain only online cpus in managed_policy->cpus
- Save user policy min/max instead of policy min/max during hotplug

Signed-off-by: zeroblade1984 <zeroblade1984@gmail.com>

Changes to be committed:
	modified:   drivers/cpufreq/cpufreq.c