tee: client UUID: Skip REE kernel login method as well

Since the addition of session's client UUID generation via commit [1],
login via REE kernel method was disallowed. So fix that via passing
nill UUID in case of TEE_IOCTL_LOGIN_REE_KERNEL method as well.

Fixes: e33bcba ("tee: add support for session's client UUID generation") [1]
Signed-off-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

drivers/tee/tee_core.c

@@ -200,7 +200,8 @@ int tee_session_calc_client_uuid(uuid_t *uuid, u32 connection_method,
  int name_len;
  int rc;
 
- if (connection_method == TEE_IOCTL_LOGIN_PUBLIC) {
+ if (connection_method == TEE_IOCTL_LOGIN_PUBLIC ||
+ connection_method == TEE_IOCTL_LOGIN_REE_KERNEL) {
  /* Nil UUID to be passed to TEE environment */
  uuid_copy(uuid, &uuid_null);
  return 0;