clk: tegra: Make vic03 a child of pll_c3

By default, the vic03 clock is a child of pll_m but that runs at 924 MHz
which is too fast for VIC. Make vic03 a child of pll_c3 by default so it
will run at a supported frequency.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>