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>

configs/nanopi_neo_air_defconfig

@@ -15,3 +15,4 @@ CONFIG_SPL=y
 # CONFIG_SPL_ISO_PARTITION is not set
 # CONFIG_SPL_EFI_PARTITION is not set
 CONFIG_USB_EHCI_HCD=y
+# CONFIG_VIDEO_DE2 is not set

configs/nanopi_neo_defconfig

@@ -16,3 +16,4 @@ CONFIG_SPL=y
 # CONFIG_SPL_EFI_PARTITION is not set
 CONFIG_SUN8I_EMAC=y
 CONFIG_USB_EHCI_HCD=y
+# CONFIG_VIDEO_DE2 is not set

configs/orangepi_zero_defconfig

@@ -15,3 +15,4 @@ CONFIG_SPL=y
 CONFIG_SPL_SPI_SUNXI=y
 CONFIG_SUN8I_EMAC=y
 CONFIG_USB_EHCI_HCD=y
+# CONFIG_VIDEO_DE2 is not set