main.c: avoid unused parameter warning or error

Signed-off-by: Victor Chong <victor.chong@linaro.org>
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
diff --git a/aes/host/main.c b/aes/host/main.c
index 7c9d79e..eda486f 100644
--- a/aes/host/main.c
+++ b/aes/host/main.c
@@ -157,7 +157,7 @@
 			res, origin);
 }
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	struct test_ctx ctx;
 	char key[AES_TEST_KEY_SIZE];