eeepc-wmi: set the right key code for 0xe9

This key should power off the backlight, not the display,
it is also used in acpi/video.c to do the same thing.

Signed-off-by: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
diff --git a/drivers/platform/x86/eeepc-wmi.c b/drivers/platform/x86/eeepc-wmi.c
index 0db7009..75dd692 100644
--- a/drivers/platform/x86/eeepc-wmi.c
+++ b/drivers/platform/x86/eeepc-wmi.c
@@ -103,7 +103,7 @@
 	{ KE_KEY, 0xcc, { KEY_SWITCHVIDEOMODE } },
 	{ KE_KEY, 0xe0, { KEY_PROG1 } },
 	{ KE_KEY, 0xe1, { KEY_F14 } },
-	{ KE_KEY, 0xe9, { KEY_DISPLAY_OFF } },
+	{ KE_KEY, 0xe9, { KEY_BRIGHTNESS_ZERO } },
 	{ KE_END, 0},
 };