Scanned frequencies are saved in ascending ordering

Change-Id: Ie426ec3fa4aa3e8f4136938eb35f419ecc0aa71a
FMRecorder : Save to a private temporary file while recording

While recording save to a temporary private file and once finished,
move to external storage

Change-Id: If82a84beeffe2ea8e5ba4bf7e93e4f3d6203e10f
Merge branch into kk_mkt