Integrate linux-guf/nallino_audio_support

Commit: seco-ne/kernel/linux-guf@ed1403ea

arm:dts: Add audio support for NALLINO

Combination the following commits: 0fa8a7d750ea1253581a214d36f2075b187a520e 39e1d8634b88ca4e8008bd6103b6ef54408f5b31

BCS 746-001388

--

Commit: seco-ne/kernel/linux-guf@b7107470

audio:sai:mqs: Patch mqs and sai driver to fix audio popping on NALLINO

The i.MX6 ULL has an audio block equipped, that can generate audio via a standard GPIO. Since the MQS (Medium Quality Sound) is a very basic audio interface, it doesn't provide any filtering of unwanted artifacts in the audio stream. This leads to a popping noise when playing audio on the Nallino. The patch changes the SAI to always generate a signal for the MQS and transfers the control of the external amplifier to the MQS driver. This helps in reducing the noticeable interference when playing audio.

Original patch-set by Sam Crossman sam.crossman@seco.com

f750e64c3eb2a6e842ddf596b622e27628014cc0 22e654f06977e670f290075458163ff38130cff3 5b432bde337e97302e03fbdabc2641c74c4cfa13

BCS 746-001388

(cherry picked from commit 0fa8a7d750ea1253581a214d36f2075b187a520e)