msm8960-common: Use interactive as the default CPU scaling governor

Currently its set to interactive as the default governor in the kernel,
but post-boot it is getting overriden by this script to set ondemand as
the governor of both cpu0 and cpu1. Change this so that interactive is
set as the default governor.

Change-Id: I428dd8bbd8a16a7704e11e4101654e9289942c39
Signed-off-by: Rohan Mathur <rohanmathur34@gmail.com>