[IE-GNA] The results are incorrect for KWS DNN(OpenVINO) model on Linux

[Christywl]

Test Env:
Chromium Version: nightly build 79.0.3917.0 (74a844d)
Platform: Linux

Expected Result:
The example should work.

Actual Result:
The results are incorrect for KWS DNN(OpenVINO) model on Linux for GNA backend:

How to Reproduce:

1. Launch chromium with /usr/bin/chromium-browser-unstable --no-sandbox --use-inference-engine and visit https://intel.github.io/webml-polyfill/examples/speech_commands
2. Select ULTRA_LOW_POWER
3. Select KWS DNN(OpenVINO)