sunxi: Disable DE2 video driver where not needed

Because DE2 driver is enabled by default, it is nice to disable it on
all boards which don't have any video output. List of such boards is
also much shorter.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
diff --git a/configs/orangepi_zero_defconfig b/configs/orangepi_zero_defconfig
index ac44937..97ef089 100644
--- a/configs/orangepi_zero_defconfig
+++ b/configs/orangepi_zero_defconfig
@@ -15,3 +15,4 @@
 CONFIG_SPL_SPI_SUNXI=y
 CONFIG_SUN8I_EMAC=y
 CONFIG_USB_EHCI_HCD=y
+# CONFIG_VIDEO_DE2 is not set