m68k/atari - atari_scsi: use correct virt/phys translation for DMA buffer

With the kernel running from FastRAM instead of ST-RAM, none of ST-RAM is
mapped by mem_init, and DMA-addressable buffer must be mapped by ioremap.

Use platform specific virt/phys translation helpers for this case.

Signed-off-by: Michael Schmitz <schmitz@debian.org>
Cc: linux-scsi@vger.kernel.org
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
diff --git a/drivers/scsi/atari_scsi.c b/drivers/scsi/atari_scsi.c
index 296c936..a8d721f 100644
--- a/drivers/scsi/atari_scsi.c
+++ b/drivers/scsi/atari_scsi.c
@@ -639,7 +639,7 @@
 					"double buffer\n");
 			return 0;
 		}
-		atari_dma_phys_buffer = virt_to_phys(atari_dma_buffer);
+		atari_dma_phys_buffer = atari_stram_to_phys(atari_dma_buffer);
 		atari_dma_orig_addr = 0;
 	}
 #endif