staging:nvec: fix typo in comment

Fix spelling error in comment in function tegra_nvec_remove.

Signed-off-by: Shailendra Verma <[e-mail]>
Acked-by: Marc Dietrich <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/nvec/nvec.c

···
 	nvec_unregister_notifier(nvec, &nvec->nvec_status_notifier);
 	cancel_work_sync(&nvec->rx_work);
 	cancel_work_sync(&nvec->tx_work);
-	/* FIXME: needs check wether nvec is responsible for power off */
+	/* FIXME: needs check whether nvec is responsible for power off */
 	pm_power_off = NULL;
 
 	return 0;