enable dmatest test suite

[jie2xzhou]

https://www.kernel.org/doc/html/latest/driver-api/dmaengine/dmatest.html

[srinathduraisamy]

LKP_Team2 working on this issue

[srinathduraisamy]

#504. Create a basic PR, let us know your thoughts. If ok will rebase and update the PR