OPE support on Tegra210 and later

Merge series from Sameer Pujar <spujar@nvidia.com>:

This series adds support for Output Prcoessing Module (OPE) module on
Tegra210 and later generations of SoCs. OPE is a client of AHUB and
it has sub blocks of PEQ (Parametric Equalizer) and MBDRC (Multi Band
Dynamic Range Compressor) for data processing.

An ASoC component is registered for OPE, which includes PEQ and MBDRC
functions as well. This can be plugged in audio path using ALSA mixer
controls. The series adds necessary binding documentaion, driver and
DT binding patches to enable OPE module on Jetson platforms.