caam_ctx.key_phys to key_dma

caam_alg_template supports multiple algorithm types
listed in union, which requires cases for
different types in function caam_alg_alloc
Signed-off-by: NYuan Kang <Yuan.Kang@freescale.com>
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>