amlogic: Move the SHA256 DMA driver to common directory

The SHA256 DMA driver can be used by multiple SoCs. Move it to the
common directory.

Signed-off-by: Carlo Caione <ccaione@baylibre.com>
Change-Id: I96319eeeeeebd503ef0dcb07c0e4ff6a67afeaa5
3 files changed