sunxi-hdmi: Add 1366x768 mode

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
wdt: allow sun7i build

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
rtc: enable rtc charge

Signed-off-by: Hans de Goede <hdegoede@redhat.com>