Polish turbulence noise to be more cloudy and softer.

Please find a recording in the bug

Bug: 281032715
Test: Manual, MediaControlPanelTest TurbulenceNoiseViewTest TurbulenceNoiseShaderTest TurbulenceNoiseControllerTest
Change-Id: Ic90b087fb3935bc77d85aadf05033057a44e3084
4 files changed