Hello

Some crypto drivers cannot process empty data message and so rely on
precalculated hash.
This patch series add precalculated hash in headers and
make the drivers use them.

Using those precalculated hash make some additionnal constify patch necessary.

Changes since v1:
- Added missing sha/md5 header in testmgr.h
- indented a block comment in CCP
- moved precalculated hash from header to .c files

Regards