crypto: sun8i-ss - Add SS_START define

Instead of using an hardcoded value, let's use a defined value for
SS_START.
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c

@@ -61,7 +61,7 @@ int sun8i_ss_run_task(struct sun8i_ss_dev *ss, struct sun8i_cipher_req_ctx *rctx
 		      const char *name)
 {
 	int flow = rctx->flow;
-	u32 v = 1;
+	u32 v = SS_START;
 	int i;
 
 #ifdef CONFIG_CRYPTO_DEV_SUN8I_SS_DEBUG

drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h

@@ -13,6 +13,8 @@
 #include <linux/debugfs.h>
 #include <linux/crypto.h>
 
+#define SS_START	1
+
 #define SS_ENCRYPTION		0
 #define SS_DECRYPTION		BIT(6)