crypto: caam - Modify the interface layers to use JR API's

- Earlier interface layers - caamalg, caamhash, caamrng were
  directly using the Controller driver private structure to access
  the Job ring.
- Changed the above to use alloc/free API's provided by Job Ring Drive

Signed-off-by: Ruchika Gupta <ruchika.gupta@freescale.com>
Reviewed-by: Garg Vakul-B16394 <vakul@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>