ide: remove CONFIG_IDEPCI_SHARE_IRQ config option

We can safely remove CONFIG_IDEPCI_SHARE_IRQ and always support
PCI IRQ sharing.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/Kconfig

@@ -374,17 +374,6 @@ comment "PCI IDE chipsets support"
 config BLK_DEV_IDEPCI
 	bool
 
-config IDEPCI_SHARE_IRQ
-	bool "Sharing PCI IDE interrupts support"
-	depends on BLK_DEV_IDEPCI
-	help
-	  Some ATA/IDE chipsets have hardware support which allows for
-	  sharing a single IRQ with other cards. To enable support for
-	  this in the ATA/IDE driver, say Y here.
-
-	  It is safe to say Y to this question, in most cases.
-	  If unsure, say N.
-
 config IDEPCI_PCIBUS_ORDER
 	def_bool BLK_DEV_IDE=y && BLK_DEV_IDEPCI
 
@@ -707,7 +696,6 @@ config BLK_DEV_SVWKS
 config BLK_DEV_SGIIOC4
 	tristate "Silicon Graphics IOC4 chipset ATA/ATAPI support"
 	depends on (IA64_SGI_SN2 || IA64_GENERIC) && SGI_IOC4
-	select IDEPCI_SHARE_IRQ
 	select BLK_DEV_IDEDMA_PCI
 	help
 	  This driver adds PIO & MultiMode DMA-2 support for the SGI IOC4

drivers/ide/ide-iops.c

@@ -449,7 +449,6 @@ int drive_is_ready (ide_drive_t *drive)
 	udelay(1);
 #endif
 
-#ifdef CONFIG_IDEPCI_SHARE_IRQ
 	/*
 	 * We do a passive status test under shared PCI interrupts on
 	 * cards that truly share the ATA side interrupt, but may also share
@@ -459,7 +458,6 @@ int drive_is_ready (ide_drive_t *drive)
 	if (IDE_CONTROL_REG)
 		stat = hwif->INB(IDE_ALTSTATUS_REG);
 	else
-#endif /* CONFIG_IDEPCI_SHARE_IRQ */
 		/* Note: this may clear a pending IRQ!! */
 		stat = hwif->INB(IDE_STATUS_REG);