arm64: tegra: Add ACONNECT, ADMA and AGIC nodes Tegra210 Smaug

Populate the ACONNECT, ADMA and AGIC nodes for Tegra210 Smaug which
are used for audio use-cases.

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>