crypto: stm32 - remove unnecessary alignmask

The stm32 crc32 algorithms set a nonzero alignmask, but they don't seem
to actually need it.  Their ->update function already has code that
handles aligning the data to the same alignment that the alignmask
specifies, their ->setkey function already uses get_unaligned_le32(),
and their ->final function already uses put_unaligned_le32().
Therefore, stop setting the alignmask.  This will allow these algorithms
to keep being registered after alignmask support is removed from shash.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/stm32/stm32-crc32.c

@@ -283,7 +283,6 @@ static struct shash_alg algs[] = {
 			.cra_priority           = 200,
 			.cra_flags		= CRYPTO_ALG_OPTIONAL_KEY,
 			.cra_blocksize          = CHKSUM_BLOCK_SIZE,
-			.cra_alignmask          = 3,
 			.cra_ctxsize            = sizeof(struct stm32_crc_ctx),
 			.cra_module             = THIS_MODULE,
 			.cra_init               = stm32_crc32_cra_init,
@@ -305,7 +304,6 @@ static struct shash_alg algs[] = {
 			.cra_priority           = 200,
 			.cra_flags		= CRYPTO_ALG_OPTIONAL_KEY,
 			.cra_blocksize          = CHKSUM_BLOCK_SIZE,
-			.cra_alignmask          = 3,
 			.cra_ctxsize            = sizeof(struct stm32_crc_ctx),
 			.cra_module             = THIS_MODULE,
 			.cra_init               = stm32_crc32c_cra_init,