test: util: pattern: add new patterns
Add three new test patterns:
- noise: random black and white pixels
- noise-color: random color pixels
- black-white: alternate between black and white pixels
Signed-off-by: Emil Svendsen emas@bang-olufsen.dk
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Add three new test patterns:
Signed-off-by: Emil Svendsen emas@bang-olufsen.dk