configs: odroid-c2: update for HDMI output, ADC & USB keyboard

Enable options to permit HDMI output on Odroid-C2 GXBB boards.
Enable VPU Power Domain.
Enable ADC and USB_KERBOARD.

Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Anand Moon <linux.amoon@gmail.com>