video: tegra20: dc: get DSI/HDMI clock parent if internal DSI/HDMI is used

If device uses native Tegra DSI or HDMI, DC clock MUST use the same
parent as DSI/HDMI clock uses. Hence remove need in device tree
configuration and satisfy this condition by default.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
1 file changed