crypto: nx - Fix typo in comment

Fix typo '@workmem' -> '@wmem'.

Cc: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/nx/nx-common-powernv.c

@@ -660,8 +660,8 @@ static int nx842_powernv_compress(const unsigned char *in, unsigned int inlen,
  * @inlen: input buffer size
  * @out: output buffer pointer
  * @outlenp: output buffer size pointer
- * @workmem: working memory buffer pointer, size determined by
- *           nx842_powernv_driver.workmem_size
+ * @wmem: working memory buffer pointer, size determined by
+ *        nx842_powernv_driver.workmem_size
  *
  * Returns: see @nx842_powernv_exec()
  */