crypto: cavium/nitrox - fix typo on crypto

crypto had a typo, fix it.
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/cavium/nitrox/nitrox_req.h

@@ -440,7 +440,7 @@ struct aqmq_command_s {
 /**
  * struct ctx_hdr - Book keeping data about the crypto context
  * @pool: Pool used to allocate crypto context
- * @dma: Base DMA address of the cypto context
+ * @dma: Base DMA address of the crypto context
  * @ctx_dma: Actual usable crypto context for NITROX
  */
 struct ctx_hdr {