sigProcLib: detectAnyBurst() family: Use struct to gather all out params

Currently we have 2 out parameters, but in forthcoming commits will add
a third one. All those functions already have too many parameters, so
let's put together all the output params in a struct to pass them easily
and make it easier to understand they are the estimated output values.

Related: OS#4006
Change-Id: I05cfa0ceaa2e633a5e6e404e2eae497ff4442dea
3 files changed