Add specific compatible for PolarFire SoC for The SiFive PDMA driver
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Shravan Chippa <shravan.chippa@microchip.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>