sdma-imx: Add SDMA firmware for Freescale i.MX SOCs

Add SDMA firmware for Freescale i.MX SOCs.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
ARM: dts: add support for the Hercules eCAFE laptop

Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>