crypto: caam - refactor skcipher/aead/gcm/chachapoly {en,de}crypt functions

Create a common crypt function for each skcipher/aead/gcm/chachapoly
algorithms and call it for encrypt/decrypt with the specific boolean -
true for encrypt and false for decrypt.

Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com>
Reviewed-by: Horia Geanta <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>