crypto: ixp4xx - Fix sparse warnings

This fixes a number of trivial sparse warnings in ixp4xx.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/ixp4xx_crypto.c

@@ -420,7 +420,7 @@ static void one_packet(dma_addr_t phys)
 		break;
 	case CTL_FLAG_GEN_REVAES:
 		ctx = crypto_tfm_ctx(crypt->data.tfm);
-		*(u32 *)ctx->decrypt.npe_ctx &= cpu_to_be32(~CIPH_ENCR);
+		*(__be32 *)ctx->decrypt.npe_ctx &= cpu_to_be32(~CIPH_ENCR);
 		if (atomic_dec_and_test(&ctx->configuring))
 			complete(&ctx->completion);
 		break;
@@ -720,7 +720,7 @@ static int register_chain_var(struct crypto_tfm *tfm, u8 xpad, u32 target,
 	crypt->init_len = init_len;
 	crypt->ctl_flags |= CTL_FLAG_GEN_ICV;
 
-	buf->next = 0;
+	buf->next = NULL;
 	buf->buf_len = HMAC_PAD_BLOCKLEN;
 	buf->pkt_len = 0;
 	buf->phys_addr = pad_phys;
@@ -751,7 +751,7 @@ static int setup_auth(struct crypto_tfm *tfm, int encrypt, unsigned int authsize
 #ifndef __ARMEB__
 	cfgword ^= 0xAA000000; /* change the "byte swap" flags */
 #endif
-	*(u32 *)cinfo = cpu_to_be32(cfgword);
+	*(__be32 *)cinfo = cpu_to_be32(cfgword);
 	cinfo += sizeof(cfgword);
 
 	/* write ICV to cryptinfo */
@@ -788,7 +788,7 @@ static int gen_rev_aes_key(struct crypto_tfm *tfm)
 	if (!crypt)
 		return -EAGAIN;
 
-	*(u32 *)dir->npe_ctx |= cpu_to_be32(CIPH_ENCR);
+	*(__be32 *)dir->npe_ctx |= cpu_to_be32(CIPH_ENCR);
 
 	crypt->data.tfm = tfm;
 	crypt->crypt_offs = 0;
@@ -846,7 +846,7 @@ static int setup_cipher(struct crypto_tfm *tfm, int encrypt, const u8 *key,
 			return err;
 	}
 	/* write cfg word to cryptinfo */
-	*(u32 *)cinfo = cpu_to_be32(cipher_cfg);
+	*(__be32 *)cinfo = cpu_to_be32(cipher_cfg);
 	cinfo += sizeof(cipher_cfg);
 
 	/* write cipher key to cryptinfo */