s390/crypto: fix typos in comments

Various spelling mistakes in comments.
Detected with the help of Coccinelle.

Signed-off-by: Julia Lawall <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Heiko Carstens <[e-mail]>

arch/s390/crypto/des_s390.c

···
  *   same as DES.  Implementers MUST reject keys that exhibit this
  *   property.
  *
- *   In fips mode additinally check for all 3 keys are unique.
+ *   In fips mode additionally check for all 3 keys are unique.
  *
  */
 static int des3_setkey(struct crypto_tfm *tfm, const u8 *key,

arch/s390/crypto/prng.c

···
 			/* give mutex free before calling schedule() */
 			mutex_unlock(&prng_data->mutex);
 			schedule();
-			/* occopy mutex again */
+			/* occupy mutex again */
 			if (mutex_lock_interruptible(&prng_data->mutex)) {
 				if (ret == 0)
 					ret = -ERESTARTSYS;