ide: convert ide_hwif_t.mmio into flag (v2)

All users of ->mmio == 1 are gone so convert ->mmio into flag.

Noticed by Alan Cox.

v2:
* updated for scc_pata

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

diff --git a/drivers/ide/legacy/q40ide.c b/drivers/ide/legacy/q40ide.c
index 434a94f..74f0812 100644
--- a/drivers/ide/legacy/q40ide.c
+++ b/drivers/ide/legacy/q40ide.c
@@ -145,7 +145,7 @@
 	index = ide_register_hw(&hw, &hwif);
 	// **FIXME**
 	if (index != -1)
-		hwif->mmio = 2;
+		hwif->mmio = 1;
     }
 }