qcom-common: Update cpufreq settings

 * Set defaults for 8960 in case we're not using CM PowerHAL
 * Switch 8974 to interactive

Change-Id: I18bc8b23eb79a66c2cb208d3507d78ab42481984
Something's not right in Narnia

This build barrier isn't working, serrano and jf/d2 devices are not
inheriting the thermal files AT ALL, and it would never do what it's
supposed to do anyway if the inheritance order in msm8960-common were
fixed to accomodate it, since htle explicitly calls msm8960-common

Change-Id: Id3dfd645c12778a9ed321dc633745e05c6c281c5
qcom-common: Add sync freq for 8960

Change-Id: I49adedc91a18d90a19cf33af9e755eeabec2455c