ASoC: fsl: imx-ssi: fix probe on imx31

On imx31 with mc13783 codec the FIQ is not necessary and not enabled
as DMA transfer is available.
Change the probe() function to fail only if both FIQ and DMA are not
available.

Signed-off-by: Philippe Rétornaz <philippe.retornaz@epfl.ch>
Signed-off-by: Mark Brown <broonie@linaro.org>