clk: tegra: Use common definition of APBDMA clock gate

The APBDMA clock is defined in the common clock gates table that is used
by Tegra30+. Tegra20 can use it too, let's remove the custom definition
and use the common one.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>