[CRYPTO] tcrypt: Fix key alignment

#define MAX_IVLEN		32

struct hash_testvec {

	/* only used with keyed hash algorithms */

	char key[128] __attribute__ ((__aligned__(4)));

	char plaintext[128];

	unsigned char psize;

	char digest[MAX_DIGEST_SIZE];

	unsigned char np;

	unsigned char tap[MAX_TAP];

	char key[128]; /* only used with keyed hash algorithms */

	unsigned char psize;

	unsigned char np;

	unsigned char ksize;

};

struct hmac_testvec {

	char key[128];

	unsigned char ksize;

	char plaintext[128];

	unsigned char psize;

	char digest[MAX_DIGEST_SIZE];

	unsigned char np;

	unsigned char tap[MAX_TAP];

	unsigned char ksize;

	unsigned char psize;

	unsigned char np;

};

struct cipher_testvec {

	char key[MAX_KEYLEN] __attribute__ ((__aligned__(4)));

	char iv[MAX_IVLEN];

	char input[48];

	char result[48];

	unsigned char tap[MAX_TAP];

	int np;

	unsigned char fail;

	unsigned char wk; /* weak key flag */

	char key[MAX_KEYLEN];

	unsigned char klen;

	char iv[MAX_IVLEN];

	char input[48];

	unsigned char ilen;

	char result[48];

	unsigned char rlen;

	int np;

	unsigned char tap[MAX_TAP];

};

struct cipher_speed {