qcom-common: Disable retention mode on msm8960

 * We're seeing major instability on msm8960 devices with retention mode
 * enabled. Disable it for now.

Change-Id: Ib714c98e7da010b893ba106c7380282db2516523
qcom-common: Manage io_is_busy for interactive governor

Change-Id: I4591c7fb5c56353ff80c044f4c173216a9c29c1f
qcom-common: Update startup scripts

Change-Id: I94dcd58ad5cbb4e8f5b24f4f6b51b3a5c43c9f44