test/dma: run test suite on skeleton driver
test/dma: run test suite on skeleton driver

When running the dmadev_autotest, run the suite of copy tests on the
skeleton driver created for API testing too, rather than just destroying
the driver instances once the API tests are complete. This helps to
sanity check the tests themselves are reasonable.

Signed-off-by: Bruce Richardson <66b9e8e8fbd5e9f41f91b0af050876182ce9d0e4@intel.com>
Reviewed-by: Kevin Laatz <961b59698dfa2327ef66e48c81ae3315f5733fd1@intel.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk