ARM: tegra: remove legacy DMA entries from DT

Now that all Tegra drivers have been converted to use DMA APIs which
retrieve DMA channel information from standard DMA DT properties, we can
remove all the legacy DT DMA-related properties.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>

diff --cc arch/arm/boot/dts/tegra114.dtsi
Simple merge

diff --cc arch/arm/boot/dts/tegra20.dtsi
Simple merge

diff --cc arch/arm/boot/dts/tegra30.dtsi
Simple merge