ide: remove ->mmio flag from ide_hwif_t

Since scc_pata host driver no longer uses IDE PCI layer / ide_dma_setup()
and all other ->mmio users set also IDE_HFLAG_MMIO host flag we can safely
remove ->mmio flag.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide-dma.c b/drivers/ide/ide-dma.c
index 174f470..7ee44f8 100644
--- a/drivers/ide/ide-dma.c
+++ b/drivers/ide/ide-dma.c
@@ -463,7 +463,7 @@
 	}
 
 	/* PRD table */
-	if (hwif->mmio)
+	if (hwif->host_flags & IDE_HFLAG_MMIO)
 		writel(hwif->dmatable_dma,
 		       (void __iomem *)(hwif->dma_base + ATA_DMA_TABLE_OFS));
 	else