hash: Use uint8_t in preference to u8

This type is more readily available on the host compiler, so use it instead.

Signed-off-by: Simon Glass <sjg@chromium.org>

common/hash.c

@@ -187,7 +187,7 @@ static struct hash_algo hash_algo[] = {
  * @allow_env_vars:	non-zero to permit storing the result to an
  *			variable environment
  */
-static void store_result(struct hash_algo *algo, const u8 *sum,
+static void store_result(struct hash_algo *algo, const uint8_t *sum,
 			 const char *dest, int allow_env_vars)
 {
 	unsigned int i;
@@ -243,8 +243,8 @@ static void store_result(struct hash_algo *algo, const u8 *sum,
  *			address, and the * prefix is not expected.
  * @return 0 if ok, non-zero on error
  */
-static int parse_verify_sum(struct hash_algo *algo, char *verify_str, u8 *vsum,
-			    int allow_env_vars)
+static int parse_verify_sum(struct hash_algo *algo, char *verify_str,
+			    uint8_t *vsum, int allow_env_vars)
 {
 	int env_var = 0;
 
@@ -311,7 +311,7 @@ int hash_lookup_algo(const char *algo_name, struct hash_algo **algop)
 	return -EPROTONOSUPPORT;
 }
 
-void hash_show(struct hash_algo *algo, ulong addr, ulong len, u8 *output)
+void hash_show(struct hash_algo *algo, ulong addr, ulong len, uint8_t *output)
 {
 	int i;
 
@@ -355,8 +355,8 @@ int hash_command(const char *algo_name, int flags, cmd_tbl_t *cmdtp, int flag,
 
 	if (multi_hash()) {
 		struct hash_algo *algo;
-		u8 output[HASH_MAX_DIGEST_SIZE];
-		u8 vsum[HASH_MAX_DIGEST_SIZE];
+		uint8_t output[HASH_MAX_DIGEST_SIZE];
+		uint8_t vsum[HASH_MAX_DIGEST_SIZE];
 		void *buf;
 
 		if (hash_lookup_algo(algo_name, &algo)) {

include/hash.h

@@ -139,6 +139,7 @@ int hash_lookup_algo(const char *algo_name, struct hash_algo **algop);
  * @len:		Length of data that was hashed
  * @output:		Hash value to display
  */
-void hash_show(struct hash_algo *algo, ulong addr, ulong len, u8 *output);
+void hash_show(struct hash_algo *algo, ulong addr, ulong len,
+	       uint8_t *output);
 #endif /* !USE_HOSTCC */
 #endif