crypto: ahash - Use GFP_KERNEL in unaligned setkey

We currently use GFP_ATOMIC in the unaligned setkey function
to allocate the temporary aligned buffer.  Since setkey must
be called in a sleepable context, we can use GFP_KERNEL instead.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/ahash.c

@@ -145,7 +145,7 @@ static int ahash_setkey_unaligned(struct crypto_ahash *tfm, const u8 *key,
 	unsigned long absize;
 
 	absize = keylen + alignmask;
-	buffer = kmalloc(absize, GFP_ATOMIC);
+	buffer = kmalloc(absize, GFP_KERNEL);
 	if (!buffer)
 		return -ENOMEM;