Fix build issues

Author: theamirocohen

features/storage/TESTS/blockdevice/general_block_device/main.cpp

@@ -13,6 +13,8 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
+#include "mbed.h"
 #include "greentea-client/test_env.h"
 #include "unity.h"
 #include "utest.h"