Replace the hmac ipad/opad values by their defined constants.
Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
  * warranty of any kind, whether express or implied.
  */
 
+#include <crypto/hmac.h>
 #include <crypto/sha.h>
 #include <linux/device.h>
 #include <linux/dma-mapping.h>
        memcpy(opad, ipad, blocksize);
 
        for (i = 0; i < blocksize; i++) {
-               ipad[i] ^= 0x36;
-               opad[i] ^= 0x5c;
+               ipad[i] ^= HMAC_IPAD_VALUE;
+               opad[i] ^= HMAC_OPAD_VALUE;
        }
 
        return 0;