aaudio: measure device power using python script

Uses ODPM on Pixel 6 or later.
Also includes a script to add an additional DDR rail.

Bug: 202345376
Test: Connect Pixel 6 using ADB
Test: start application
Test: measure_device_power.py -s 60
Test: Copy CSV into spreadsheet
Test: measure_device_power.py -h
Change-Id: I455f7b84963f5b8bfba15dc74e9e51386cdeb45a