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/amd74xx.c b/drivers/ide/pci/amd74xx.c
index 9e9e2b6..11d20bb 100644
--- a/drivers/ide/pci/amd74xx.c
+++ b/drivers/ide/pci/amd74xx.c
@@ -280,10 +280,10 @@
 		.init_hwif	= init_hwif_amd74xx,			\
 		.autodma	= AUTODMA,				\
 		.enablebits	= {{0x40,0x02,0x02}, {0x40,0x01,0x01}},	\
-		.bootable	= ON_BOARD,				\
-		.host_flags	= IDE_HFLAG_PIO_NO_BLACKLIST		\
-				| IDE_HFLAG_PIO_NO_DOWNGRADE		\
-				| IDE_HFLAG_POST_SET_MODE,		\
+		.host_flags	= IDE_HFLAG_PIO_NO_BLACKLIST |		\
+				  IDE_HFLAG_PIO_NO_DOWNGRADE |		\
+				  IDE_HFLAG_POST_SET_MODE |		\
+				  IDE_HFLAG_BOOTABLE,			\
 		.pio_mask	= ATA_PIO5,				\
 	}
 
@@ -294,10 +294,10 @@
 		.init_hwif	= init_hwif_amd74xx,			\
 		.autodma	= AUTODMA,				\
 		.enablebits	= {{0x50,0x02,0x02}, {0x50,0x01,0x01}},	\
-		.bootable	= ON_BOARD,				\
-		.host_flags	= IDE_HFLAG_PIO_NO_BLACKLIST		\
-				| IDE_HFLAG_PIO_NO_DOWNGRADE		\
-				| IDE_HFLAG_POST_SET_MODE,		\
+		.host_flags	= IDE_HFLAG_PIO_NO_BLACKLIST |		\
+				  IDE_HFLAG_PIO_NO_DOWNGRADE |		\
+				  IDE_HFLAG_POST_SET_MODE |		\
+				  IDE_HFLAG_BOOTABLE,			\
 		.pio_mask	= ATA_PIO5,				\
 	}