Remove the usage of dma_get_required_mask() API.  Directly set the DMA mask
to 63/64 if the system is a 64bit machine.
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Link: https://lore.kernel.org/r/20221111102246.19995-2-sreekanth.reddy@broadcom.comSigned-off-by: Martin K. Petersen <martin.petersen@oracle.com>