[DMA Engine Framework] report #4

[Jakub Klama]

Done this week:
* improved error handling in DaVinci EDMA3 driver
* some improvements in framework glue code
* written unit test suite (not commited yet)

Plans for next week:
* finish EDMA3 driver
* continue work on test suite

Last two weeks was slow, because of exams at the university, but
from this week I will spend much more time on project, to complete
next milestones on time.

-- 
Jakub Klama