Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 31e9e10..ec574fc 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -1354,7 +1354,7 @@
 		status = acpi_video_bus_get_one_device(dev, video);
 		if (ACPI_FAILURE(status)) {
 			printk(KERN_WARNING PREFIX
-					"Cant attach device\n");
+					"Can't attach device\n");
 			continue;
 		}
 	}
@@ -1373,7 +1373,7 @@
 					    acpi_video_device_notify);
 	if (ACPI_FAILURE(status)) {
 		printk(KERN_WARNING PREFIX
-		       "Cant remove video notify handler\n");
+		       "Can't remove video notify handler\n");
 	}
 	if (device->backlight) {
 		backlight_device_unregister(device->backlight);