Update sdma firmware to v3.5/v4.5:
  -- add uart rom script address in header of sdma firmware to support
     the uart driver of latest kernel working well while old firmware
     assume ram script used for uart driver as NXP internal legacy
     kernel.
  -- add multi-fifo SAI/PDM scripts.

Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Signed-off-by: Josh Boyer <jwboyer@kernel.org>

Add the firmwares for the i.MX SDMA driver that runs on i.MX6
and i.MX7.

Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Signed-off-by: Nitin Garg <nitin.garg@nxp.com>
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Kyle McMartin <kyle@kernel.org>