crypto: brcm - explicitly cast cipher to hash type

In the AES cases enum spu_cipher_type and enum hash_type have
the same values, so the assignment is fine. Explicitly cast
the enum type conversion.

This fixes two warnings when building with clang:
  drivers/crypto/bcm/cipher.c:821:34: warning: implicit conversion from
      enumeration type 'enum spu_cipher_type' to different enumeration
      type 'enum hash_type' [-Wenum-conversion]
                hash_parms.type = cipher_parms.type;
                                ~ ~~~~~~~~~~~~~^~~~
  drivers/crypto/bcm/cipher.c:1412:26: warning: implicit conversion from
      enumeration type 'enum spu_cipher_type' to different enumeration
      type 'enum hash_type' [-Wenum-conversion]
                hash_parms.type = ctx->cipher_type;
                                ~ ~~~~~^~~~~~~~~~~
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/bcm/cipher.c

@@ -818,7 +818,7 @@ static int handle_ahash_req(struct iproc_reqctx_s *rctx)
 
 	/* AES hashing keeps key size in type field, so need to copy it here */
 	if (hash_parms.alg == HASH_ALG_AES)
-		hash_parms.type = cipher_parms.type;
+		hash_parms.type = (enum hash_type)cipher_parms.type;
 	else
 		hash_parms.type = spu->spu_hash_type(rctx->total_sent);
 
@@ -1409,7 +1409,7 @@ static int handle_aead_req(struct iproc_reqctx_s *rctx)
 						rctx->iv_ctr_len);
 
 	if (ctx->auth.alg == HASH_ALG_AES)
-		hash_parms.type = ctx->cipher_type;
+		hash_parms.type = (enum hash_type)ctx->cipher_type;
 
 	/* General case AAD padding (CCM and RFC4543 special cases below) */
 	aead_parms.aad_pad_len = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode,