crypto: powerpc - don't set ivsize for AES-ECB

Set the ivsize for the "ecb-ppc-spe" algorithm to 0, since ECB mode
doesn't take an IV.

This fixes a failure in the extra crypto self-tests:

	alg: skcipher: ivsize for ecb-ppc-spe (16) doesn't match generic impl (0)
Signed-off-by: NEric Biggers <ebiggers@google.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

arch/powerpc/crypto/aes-spe-glue.c

@@ -415,7 +415,6 @@ static struct crypto_alg aes_algs[] = { {
 		.blkcipher = {
 			.min_keysize		=	AES_MIN_KEY_SIZE,
 			.max_keysize		=	AES_MAX_KEY_SIZE,
-			.ivsize			=	AES_BLOCK_SIZE,
 			.setkey			=	ppc_aes_setkey,
 			.encrypt		=	ppc_ecb_encrypt,
 			.decrypt		=	ppc_ecb_decrypt,