Resolve "Follow-up on MR !3012 - Replace scale_sig() by Scale_sig()"

• Related issues: #2590 (closed)
• Requested reviewers: @naghibzadeht , @vaillancour

Reason why this change is needed

• In the course of !3012 (merged) the scaling function Scale_sig() was replaced by scale_sig(), in order to check for saturations. However, it is felt safer to return to Scale_sig(), since this includes overflow handling.

Description of the change

• Replace scale_sig() by Scale_sig() within FIX_BASOP_2519_ICBWE_DEC_Q_TRACK.

Affected operating points

• All operating points are BE.

Closes #2590 (closed)