arm64: defconfig: Enable Tegra HDA support

Enable support for Tegra HDA controller in the ARM64 defconfig which is
used by Tegra210, Tegra186 and Tegra194. Please note that the Tegra HDA
controller requires the HDA HDMI/DP codec driver and so enable this as
well.

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