[SCSI] host state model update: replace old host bitmap state

Migrate the current SCSI host state model to a model like SCSI
device is using.

Signed-off-by: Mike Anderson <andmike@us.ibm.com>

Rejections fixed up and

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/scsi_ioctl.c b/drivers/scsi/scsi_ioctl.c
index 7a6b530..f5bf5c0 100644
--- a/drivers/scsi/scsi_ioctl.c
+++ b/drivers/scsi/scsi_ioctl.c
@@ -475,8 +475,7 @@
 	 * error processing, as long as the device was opened
 	 * non-blocking */
 	if (filp && filp->f_flags & O_NONBLOCK) {
-		if (test_bit(SHOST_RECOVERY,
-			     &sdev->host->shost_state))
+		if (sdev->host->shost_state == SHOST_RECOVERY)
 			return -ENODEV;
 	} else if (!scsi_block_when_processing_errors(sdev))
 		return -ENODEV;