linux-phytec-fsl

drivers/dma/pch_dma: declare pch_dma_id_table as static

pch_dma_id_table is used in pch_dma.c only, so declare
it as static

Signed-off-by: Michele Curti <michele.curti@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>