tree 81ad55a5431fd510c25d518983c5ffb388ca2864
parent 4229fb12a03e5da5882b420b0aa4a02e77447b86
author Max Filippov <jcmvbkbc@gmail.com> 1432526105 +0300
committer Max Filippov <jcmvbkbc@gmail.com> 1439785860 +0300

xtensa: reimplement DMA API using common helpers

- keep existing functionality: don't handle attributes, don't support
  high memory;
- implement scatterlist primitives (map/unmap/sync);
- enable DMA API debug.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>