clk: sunxi-ng: v3s: Fix TCON clock parents

The TCON clock can be parented to both the video PLL and the periph0 PLL.
Add the latter, which was missing from the list.

Fixes: d0f11d14 ("clk: sunxi-ng: add support for V3s CCU")
Signed-off-by: Paul Kocialkowski <paulk@sys-base.io>
Link: https://patch.msgid.link/20250701201124.812882-5-paulk@sys-base.io


Signed-off-by: Chen-Yu Tsai <wens@csie.org>