ASoC: imx-hdmi-dma: Whitespace cleanup
ASoC: imx-hdmi-dma: Fix subframe assembly / channel status in HBR mode.

High bitrate mode is siganlled to the driver as passthrough with 8 channels.
However, it is infact a two channel mode. This patch corrects the handling
of priv->frame_idx to create proper channel status information.
ASoC: fsl_hdmi: Allow access to full channel status info (6 bytes).
ASoC: imx-hdmi-dma: Do not modify global iec_header during subframe assembly.

To make the iec958 control return consistent data, the field B.channel in
iec_header should not be rewritten when building subframes.
ASoC: imx-hdmi-dma: Optimize SNDRV_PCM_TRIGGER_xxx handling.

Do not reset frame_idx on SNDRV_PCM_TRIGGER_xxx events. This speeds
up recovering from underrun conditions in non-PCM mode. Also don't
do a full dma re-initialisation on SNDRV_PCM_TRIGGER_PAUSE_RELEASE.
ASoC: imx-hdmi-dma: Increase audio buffer size to enable HD and high rate multichannel playback.