test/dma: add failure handling tests

test/dma: add failure handling tests

Add a series of tests to inject bad copy operations into a dmadev to
test the error handling and reporting capabilities. Various combinations
of errors in various positions in a burst are tested, as are errors in
bursts with fence flag set, and multiple errors in a single burst.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Reviewed-by: Kevin Laatz <kevin.laatz@intel.com>
Reviewed-by: Conor Walsh <conor.walsh@intel.com>