crypto: bcm - fix repeated words in comments

Delete the redundant word 'in'.

Signed-off-by: wangjianli <wangjianli@cdjrlc.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/drivers/crypto/bcm/cipher.h b/drivers/crypto/bcm/cipher.h
index 71281a3..d6d8733 100644
--- a/drivers/crypto/bcm/cipher.h
+++ b/drivers/crypto/bcm/cipher.h
@@ -231,7 +231,7 @@
 
 	/*
 	 * shash descriptor - needed to perform incremental hashing in
-	 * in software, when hw doesn't support it.
+	 * software, when hw doesn't support it.
 	 */
 	struct shash_desc *shash;