Revise rpi sdhost driver to support dma instead of manual copying #57
Description
Revised rpi sdhost driver to support dma instead of manual copying like it is done in the emmc driver used for raspberry pi 2.
Things to be done
- Get sdhost dma copy working on real device
- Remove non dma code from sdhost driver
- Remove special sdhost logic from mmio server
- Speed up performance of reading from database for emmc and sdhost
- Integrate sd card power off and on again for emmc
Required testing
- EMMC driver is still working in terms of reading and writing
- SDHost driver is working in terms of reading and writing with dma