dmaengine: imx-sdma: support hdmi in sdma

The hdmi script already supported in sdma firmware. So add support hdmi
in sdma driver.

The design of hdmi script is different from common script such as sai.
There is no need to config buffer descriptor for HDMI. The cyclic
capability is achieved by the hdmi script. The slave config is so simple,
only config src_addr, dts_addr and direction DMA_TRANS_NONE.

Signed-off-by: Joy Zou <joy.zou@nxp.com>
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Link: https://lore.kernel.org/r/20221115093823.2879128-3-joy.zou@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

dmaengine: imx-sdma: Add FIFO stride support for multi FIFO script

The peripheral may have several FIFOs, but some case just select
some FIFOs from them for data transfer, which means FIFO0 and FIFO2
may be selected. So add FIFO address stride support, 0 means all FIFOs
are continuous, 1 means 1 word stride between FIFOs. All stride between
FIFOs should be same.

Another option words_per_fifo means how many audio channel data copied
to one FIFO one time, 1 means one channel per FIFO, 2 means 2 channels
per FIFO.

If 'n_fifos_src = 4' and 'words_per_fifo = 2', it means the first two
words(channels) fetch from FIFO0 and then jump to FIFO1 for next two words,
and so on after the last FIFO3 fetched, roll back to FIFO0.

Signed-off-by: Joy Zou <joy.zou@nxp.com>
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://lore.kernel.org/r/1657162829-9273-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

dmaengine: imx-sdma: Add multi fifo support

The i.MX SDMA engine can read from / write to multiple successive
hardware FIFO registers, referred to as "Multi FIFO support". This is
needed for the micfil driver and certain configurations of the SAI
driver. This patch adds support for this feature.

The number of FIFOs to read from / write to must be communicated from
the client driver to the SDMA engine. For this the struct
dma_slave_config::peripheral_config field is used.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-By: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20220414162249.3934543-12-s.hauer@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>

dmaengine: imx: Move header to include/dma/

The i.MX DMA drivers are device tree only, nothing in
include/linux/platform_data/dma-imx.h has platform_data in it, so move
the file to include/linux/dma/imx-dma.h.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-By: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20220414162249.3934543-10-s.hauer@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>