configs: odroid-c4: update for HDMI output background & USB keyboard

Enable options SYS_WHITE_ON_BLACK to permit HDMI background
screen from white to back, also enable USB_KEYBOARD.
Signed-off-by: NAnand Moon <linux.amoon@gmail.com>
Acked-by: NNeil Armstrong <narmstrong@baylibre.com>
Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com>

configs/odroid-c4_defconfig

@@ -49,6 +49,7 @@ CONFIG_USB_XHCI_DWC3=y
 CONFIG_USB_DWC3=y
 # CONFIG_USB_DWC3_GADGET is not set
 CONFIG_USB_DWC3_MESON_G12A=y
+CONFIG_USB_KEYBOARD=y
 CONFIG_USB_GADGET=y
 CONFIG_USB_GADGET_VENDOR_NUM=0x1b8e
 CONFIG_USB_GADGET_PRODUCT_NUM=0xfada
@@ -56,6 +57,9 @@ CONFIG_USB_GADGET_DWC2_OTG=y
 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_SPLASH_SCREEN=y