ide: add IDE_HFLAG_NO_LBA48 and IDE_HFLAG_NO_LBA48_DMA host flags

Add IDE_HFLAG_NO_LBA48[_DMA] host flags, use it instead of hwif->no_lba48[_dma]
and then remove no longer needed hwif->no_lba48[_dma].  As a side-effect
this change fixes hwif->no_lba48_dma not being restored by ide_hwif_restore().

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 3c945d6..e294c74 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -951,7 +951,8 @@
 	blk_queue_segment_boundary(q, 0xffff);
 
 	if (!hwif->rqsize) {
-		if (hwif->no_lba48 || hwif->no_lba48_dma)
+		if ((hwif->host_flags & IDE_HFLAG_NO_LBA48) ||
+		    (hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA))
 			hwif->rqsize = 256;
 		else
 			hwif->rqsize = 65536;