tools/hv: Fix string types

Initial patch by Ben Hutchings <ben@decadent.org.uk>

Standard C strings are arrays of char, not __u8 (unsigned char).
Declare variables and parameters accordingly, and add the necessary
casts.
Signed-off-by: NTomas Hozza <thozza@redhat.com>
Acked-by: NK. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

tools/hv/hv_kvp_daemon.c

@@ -299,7 +299,7 @@ static int kvp_file_init(void)
 	return 0;
 }
 
-static int kvp_key_delete(int pool, __u8 *key, int key_size)
+static int kvp_key_delete(int pool, const char *key, int key_size)
 {
 	int i;
 	int j, k;
@@ -342,7 +342,7 @@ static int kvp_key_delete(int pool, __u8 *key, int key_size)
 	return 1;
 }
 
-static int kvp_key_add_or_modify(int pool, __u8 *key, int key_size, __u8 *value,
+static int kvp_key_add_or_modify(int pool, const char *key, int key_size, const char *value,
 			int value_size)
 {
 	int i;
@@ -396,7 +396,7 @@ static int kvp_key_add_or_modify(int pool, __u8 *key, int key_size, __u8 *value,
 	return 0;
 }
 
-static int kvp_get_value(int pool, __u8 *key, int key_size, __u8 *value,
+static int kvp_get_value(int pool, const char *key, int key_size, char *value,
 			int value_size)
 {
 	int i;
@@ -428,8 +428,8 @@ static int kvp_get_value(int pool, __u8 *key, int key_size, __u8 *value,
 	return 1;
 }
 
-static int kvp_pool_enumerate(int pool, int index, __u8 *key, int key_size,
-				__u8 *value, int value_size)
+static int kvp_pool_enumerate(int pool, int index, char *key, int key_size,
+				char *value, int value_size)
 {
 	struct kvp_record *record;