simple panel: fix spelling of debug message

Fix spelling of debug message from cnnot to cannot.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Acked-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Tom Warren <twarren@nvidia.com>

drivers/video/simple_panel.c

@@ -42,7 +42,7 @@ static int simple_panel_ofdata_to_platdata(struct udevice *dev)
 		ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev,
 						   "power-supply", &priv->reg);
 		if (ret) {
-			debug("%s: Warning: cnnot get power supply: ret=%d\n",
+			debug("%s: Warning: cannot get power supply: ret=%d\n",
 			      __func__, ret);
 			if (ret != -ENOENT)
 				return ret;