tests: dma: update dma block transfer app

Update the dma block transfer sample app to use the new
dma api interfaces. This change is based on the api change
and the updated dma driver.

A RFC was posted recently on this.

Jira: ZEP-873

Change-Id: Icf3bec7260c2e499485b07a4a579956448a1a3fd
Signed-off-by: Baohong Liu <baohong.liu@intel.com>