cpufreq: ondemand:Fix NULL check for dbs_info->cur_policy

dbs_info->cur_policy can go NULL when processing
CPUFREQ_GOV_LIMITS, NULL check is required
before processing it

Change-Id: Iba99b563e230835dfcd24573335065d68ad25821
CRs-fixed: 576272
Signed-off-by: Swetha Chikkaboraiah <schikk@codeaurora.org>
Joe's tiny RCU patch.

Based off https://lkml.org/lkml/2012/5/21/344
Adjusted for P880-DEV kernel by Demetris
Activate JRCU on the correct Arch
Signed-off-by: Demetris
Fix JRCU commit for P880
Lower dvfs cpu_lp rate limits