drivers: dma: Update NXP EDMA driver for version 4

1. Update EDMA driver for version 4
2. The DMAMux module is not always present. Use the
   feature define to make this optional.
3. Use the EDMA_SetChannelMux API for SoC's that supports
   this feature.

Signed-off-by: Mahesh Mahadevan <mahesh.mahadevan@nxp.com>