Use linaro 4.9

Change-Id: I8045c323e362621bd0a42ada664e80d476de54e9
Signed-off-by: Josue Rivera <prbassplayer@gmail.com>
drivers/cpufreq/cpufreq_interactive Fix compiler warnings

  * Fix undefined operation on ret
  * Fix some undefined variables

Change-Id: Iabc35641985a721e707772ae3273010f7264168d
Signed-off-by: Josue Rivera <prbassplayer@gmail.com>