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: mx6: Use the same sdma firmware name for all mx6 variants

All the mx6 variants (quad, dual, solo and solo-lite) use the same sdma
firmware, so drop the the suffix from the file name.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
firmware,imx6: install sdma blob

Signed-off-by: Vincent Stehlé <vincent.stehle@freescale.com>