ide: add ide_pci_device_t.host_flags (take 2)

* Rename ide_pci_device_t.flags to ide_pci_device_t.host_flags
  and IDEPCI_FLAG_ISA_PORTS flag to IDE_HFLAG_ISA_PORTS.

* Add IDE_HFLAG_SINGLE flag for single channel devices.

* Convert core code and all IDE PCI drivers to use IDE_HFLAG_SINGLE
  and remove no longer needed ide_pci_device_t.channels field.

v2:
* Fix issues noticed by Sergei:
  - correct code alignment in scc_pata.c
  - s/IDE_HFLAG_SINGLE/~IDE_HFLAG_SINGLE/ in serverworks.c

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/pci/atiixp.c b/drivers/ide/pci/atiixp.c
index bfdf086..078adbe 100644
--- a/drivers/ide/pci/atiixp.c
+++ b/drivers/ide/pci/atiixp.c
@@ -291,17 +291,16 @@
 	{	/* 0 */
 		.name		= "ATIIXP",
 		.init_hwif	= init_hwif_atiixp,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x48,0x01,0x00}, {0x48,0x08,0x00}},
 		.bootable	= ON_BOARD,
 	},{	/* 1 */
 		.name		= "SB600_PATA",
 		.init_hwif	= init_hwif_atiixp,
-		.channels	= 1,
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x48,0x01,0x00}, {0x00,0x00,0x00}},
  		.bootable	= ON_BOARD,
+ 		.host_flags	= IDE_HFLAG_SINGLE,
  	},
 };