qcacmn: Moving spectral module to cmn_dev

As part of second phase of Spectral Analysis(SA)
convergence [WIN & MCL], spectral module code is being moved to cmn_dev.
Also includes fixes for checkpatch.

CRs-Fixed: 2146231
Change-Id: I939509193786b0bd2cbd5f1af64d4a94739a2af5
23 files changed