cpufreq: OC up to 2.5GHz (Yank555.lu)

- added 2.34GHz, 2.42 GHz and 2.50GHz step
- max. voltage increased from 1100000 to 1200000 microVolt
msm8974-regulator.dtsi: adjust GFX regulator parameters

settings based on qcom documentation

Signed-off-by: Paul Reioux <reioux@gmail.com>
msm8974-regulator.dtsi: further reduce CPU retention voltage

this should help idel drain during processor retention c-state

Signed-off-by: Paul Reioux <reioux@gmail.com>
drivers/gpu/msm/z180 : fix memory leak
compilation: fix up for mismatched type for system_rev

Signed-off-by: Paul Reioux <reioux@gmail.com>
drivers/tty/n_tty.c: fix CVE-2014-0196

Signed-off-by: Paul Reioux <reioux@gmail.com>
cpufreq_limit: OC up to 2.5GHz (Yank555.lu)

- define MAX_FREQ_LIMIT at 2.5GHz as well