eSCO: Format changes to original vendor patch (4/5)

* Format changes to original vendor patch
* Re-order part of SCO creation code to improve readability
* Make log more concise and usefull

Bug: 19540029
Test: make, HFP PTS test, testplans/86884, testplans/87103
Change-Id: Ie0199519afb30f56568c04fef728fce44a172063
(cherry picked from commit ad319935)