crypto: ccp - Clean up the LSB slot allocation code

Fix a few problems revealed by testing: verify consistent
units, especially in public slot allocation. Percolate
some common initialization code up to a common routine.
Add some comments.

Signed-off-by: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
3 files changed