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/cs5520.c b/drivers/ide/pci/cs5520.c
index 3b88a3a..5539a25 100644
--- a/drivers/ide/pci/cs5520.c
+++ b/drivers/ide/pci/cs5520.c
@@ -194,10 +194,9 @@
 		.name		= name_str,			\
 		.init_setup_dma = cs5520_init_setup_dma,	\
 		.init_hwif	= init_hwif_cs5520,		\
-		.channels	= 2,				\
 		.autodma	= AUTODMA,			\
 		.bootable	= ON_BOARD,			\
-		.flags		= IDEPCI_FLAG_ISA_PORTS,	\
+		.host_flags	= IDE_HFLAG_ISA_PORTS,		\
 	}
 
 static ide_pci_device_t cyrix_chipsets[] __devinitdata = {