ide: add IDE_HFLAG_BOOTABLE host flag

Add IDE_HFLAG_BOOTABLE host flag and IDE_HFLAG_OFF_BOARD define.  Convert
all host drivers using ide_pci_device_t to use IDE_HFLAG_{BOOTABLE,OFF_BOARD}
instead of d->bootable and then remove no longer needed d->bootable.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/pci/cmd64x.c b/drivers/ide/pci/cmd64x.c
index bd9adfb..8e0ece5 100644
--- a/drivers/ide/pci/cmd64x.c
+++ b/drivers/ide/pci/cmd64x.c
@@ -585,8 +585,7 @@
 		.init_hwif	= init_hwif_cmd64x,
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x00,0x00,0x00}, {0x51,0x08,0x08}},
-		.bootable	= ON_BOARD,
-		.host_flags	= IDE_HFLAG_ABUSE_PREFETCH,
+		.host_flags	= IDE_HFLAG_ABUSE_PREFETCH | IDE_HFLAG_BOOTABLE,
 		.pio_mask	= ATA_PIO5,
 		.udma_mask	= 0x00, /* no udma */
 	},{	/* 1 */
@@ -596,8 +595,7 @@
 		.init_hwif	= init_hwif_cmd64x,
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
-		.bootable	= ON_BOARD,
-		.host_flags	= IDE_HFLAG_ABUSE_PREFETCH,
+		.host_flags	= IDE_HFLAG_ABUSE_PREFETCH | IDE_HFLAG_BOOTABLE,
 		.pio_mask	= ATA_PIO5,
 		.udma_mask	= 0x07, /* udma0-2 */
 	},{	/* 2 */
@@ -607,8 +605,7 @@
 		.init_hwif	= init_hwif_cmd64x,
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
-		.bootable	= ON_BOARD,
-		.host_flags	= IDE_HFLAG_ABUSE_PREFETCH,
+		.host_flags	= IDE_HFLAG_ABUSE_PREFETCH | IDE_HFLAG_BOOTABLE,
 		.pio_mask	= ATA_PIO5,
 		.udma_mask	= 0x1f, /* udma0-4 */
 	},{	/* 3 */
@@ -618,8 +615,7 @@
 		.init_hwif	= init_hwif_cmd64x,
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
-		.bootable	= ON_BOARD,
-		.host_flags	= IDE_HFLAG_ABUSE_PREFETCH,
+		.host_flags	= IDE_HFLAG_ABUSE_PREFETCH | IDE_HFLAG_BOOTABLE,
 		.pio_mask	= ATA_PIO5,
 		.udma_mask	= 0x3f, /* udma0-5 */
 	}