scsi: make imm depend on !HIGHMEM

This is one of the last drivers depending on the block layer bounce
buffering code. Restrict it to run on non-highmem configs so that the
bounce buffering code can be removed.

Signed-off-by: Christoph Hellwig <[e-mail]>
Reviewed-by: Hannes Reinecke <[e-mail]>
Reviewed-by: John Garry <[e-mail]>
Reviewed-by: Johannes Thumshirn <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Jens Axboe <[e-mail]>

drivers/scsi/Kconfig

···
 config SCSI_IMM
 	tristate "IOMEGA parallel port (imm - newer drives)"
 	depends on SCSI && PARPORT_PC
+	depends on !HIGHMEM
 	help
 	  This driver supports newer versions of IOMEGA's parallel port ZIP
 	  drive (a 100 MB removable media device).

drivers/scsi/imm.c

···
 	host = scsi_host_alloc(&imm_template, sizeof(imm_struct *));
 	if (!host)
 		goto out1;
-	host->no_highmem = true;
 	host->io_port = pb->base;
 	host->n_io_port = ports;
 	host->dma_channel = -1;