ide: replace special_t typedef by IDE_SFLAG_* flags

Replace:
- special_t typedef by IDE_SFLAG_* flags
- 'special_t special' ide_drive_t's field by 'u8 special_flags' one

There should be no functional changes caused by this patch.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/ide-eh.c

@@ -52,7 +52,7 @@ static ide_startstop_t ide_ata_error(ide_drive_t *drive, struct request *rq,
 	}
 
 	if ((rq->errors & ERROR_RECAL) == ERROR_RECAL)
-		drive->special.b.recalibrate = 1;
+		drive->special_flags |= IDE_SFLAG_RECALIBRATE;
 
 	++rq->errors;
 
@@ -268,9 +268,8 @@ static void ide_disk_pre_reset(ide_drive_t *drive)
 {
 	int legacy = (drive->id[ATA_ID_CFS_ENABLE_2] & 0x0400) ? 0 : 1;
 
-	drive->special.all = 0;
-	drive->special.b.set_geometry = legacy;
-	drive->special.b.recalibrate  = legacy;
+	drive->special_flags =
+		legacy ? (IDE_SFLAG_SET_GEOMETRY | IDE_SFLAG_RECALIBRATE) : 0;
 
 	drive->mult_count = 0;
 	drive->dev_flags &= ~IDE_DFLAG_PARKED;
@@ -280,7 +279,7 @@ static void ide_disk_pre_reset(ide_drive_t *drive)
 		drive->mult_req = 0;
 
 	if (drive->mult_req != drive->mult_count)
-		drive->special.b.set_multmode = 1;
+		drive->special_flags |= IDE_SFLAG_SET_MULTMODE;
 }
 
 static void pre_reset(ide_drive_t *drive)