hp-wmi: Add support for tablet rotation key

The HP touchsmart tablet has a key for rotating the UI from landscape to
portrait. Add support for it.
Signed-off-by: Matthew Garrett <mjg@redhat.com>

drivers/platform/x86/hp-wmi.c

@@ -89,6 +89,7 @@ static struct key_entry hp_wmi_keymap[] = {
 	{KE_KEY, 0x20e6, KEY_PROG1},
 	{KE_KEY, 0x2142, KEY_MEDIA},
 	{KE_KEY, 0x213b, KEY_INFO},
+	{KE_KEY, 0x2169, KEY_DIRECTION},
 	{KE_KEY, 0x231b, KEY_HELP},
 	{KE_END, 0}
 };