configs: khadas-vim3: enable HDMI output

Enable options to permit HDMI output on Khadas VIM3 & VIM3L boards.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
diff --git a/configs/khadas-vim3l_defconfig b/configs/khadas-vim3l_defconfig
index 28c20c0..887885f 100644
--- a/configs/khadas-vim3l_defconfig
+++ b/configs/khadas-vim3l_defconfig
@@ -57,6 +57,7 @@
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_DWC3=y
 CONFIG_USB_DWC3=y
+CONFIG_USB_KEYBOARD=y
 # CONFIG_USB_DWC3_GADGET is not set
 CONFIG_USB_DWC3_MESON_G12A=y
 CONFIG_USB_GADGET=y
@@ -66,6 +67,9 @@
 CONFIG_USB_GADGET_DWC2_OTG_PHY_BUS_WIDTH_8=y
 CONFIG_USB_GADGET_DOWNLOAD=y
 CONFIG_DM_VIDEO=y
+# CONFIG_VIDEO_BPP8 is not set
+# CONFIG_VIDEO_BPP16 is not set
+CONFIG_SYS_WHITE_ON_BLACK=y
 CONFIG_VIDEO_MESON=y
 CONFIG_VIDEO_DT_SIMPLEFB=y
 CONFIG_OF_LIBFDT_OVERLAY=y