staging: fsl-dpaa2/eth: fix a couple of implicit includes

dpni.c is using byte order macros and error codes but does
not explicitly include the required kernel header, so add it.
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Acked-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/fsl-dpaa2/ethernet/dpni.c

@@ -30,6 +30,8 @@
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  */
+#include <linux/kernel.h>
+#include <linux/errno.h>
 #include "../../fsl-mc/include/mc-sys.h"
 #include "../../fsl-mc/include/mc-cmd.h"
 #include "dpni.h"