[Cleanup] cleanup unused variable about msi driver

["bibo,mao" <bibo.mao@intel.com>]

In IA64 platform, msi driver does not use irq_vector variable, and in
x86 platform LAST_DEVICE_VECTOR should one before FIRST_SYSTEM_VECTOR,
this patch modify this.

Signed-off-by: bibo, mao<bibo.mao@intel.com>

Thanks
Bibo,mao
---

diff -Nruap 2.6.17-rc5-mm1.org/drivers/pci/msi.c 2.6.17-rc5-mm1/drivers/pci/msi.c
--- 2.6.17-rc5-mm1.org/drivers/pci/msi.c	2006-05-31 15:10:51.000000000 +0800
+++ 2.6.17-rc5-mm1/drivers/pci/msi.c	2006-05-31 15:21:38.000000000 +0800
@@ -35,7 +35,6 @@ static int nr_msix_devices;

#ifndef CONFIG_X86_IO_APIC
int vector_irq[NR_VECTORS] = { [0 ... NR_VECTORS - 1] = -1};
-u8 irq_vector[NR_IRQ_VECTORS];
#endif

static struct msi_ops *msi_ops;
@@ -383,10 +382,6 @@ static int msi_init(void)
		return status;
	}

-#ifndef CONFIG_X86_IO_APIC
-	irq_vector[0] = FIRST_DEVICE_VECTOR;
-#endif
-
	if (last_alloc_vector < 0) {
		pci_msi_enable = 0;
		printk(KERN_WARNING "PCI: No interrupt vectors available for MSI\n");
diff -Nruap 2.6.17-rc5-mm1.org/include/asm-i386/msi.h 2.6.17-rc5-mm1/include/asm-i386/msi.h
--- 2.6.17-rc5-mm1.org/include/asm-i386/msi.h	2006-05-31 15:10:51.000000000 +0800
+++ 2.6.17-rc5-mm1/include/asm-i386/msi.h	2006-05-31 15:22:10.000000000 +0800
@@ -9,7 +9,7 @@
#include <asm/desc.h>
#include <mach_apic.h>

-#define LAST_DEVICE_VECTOR		232
+#define LAST_DEVICE_VECTOR	(FIRST_SYSTEM_VECTOR - 1)
#define MSI_TARGET_CPU_SHIFT	12

extern struct msi_ops msi_apic_ops;
diff -Nruap 2.6.17-rc5-mm1.org/include/asm-x86_64/msi.h 2.6.17-rc5-mm1/include/asm-x86_64/msi.h
--- 2.6.17-rc5-mm1.org/include/asm-x86_64/msi.h	2006-05-31 15:10:50.000000000 +0800
+++ 2.6.17-rc5-mm1/include/asm-x86_64/msi.h	2006-05-31 15:22:28.000000000 +0800
@@ -10,7 +10,7 @@
#include <asm/mach_apic.h>
#include <asm/smp.h>

-#define LAST_DEVICE_VECTOR		232
+#define LAST_DEVICE_VECTOR	(FIRST_SYSTEM_VECTOR - 1)
#define MSI_TARGET_CPU_SHIFT	12

extern struct msi_ops msi_apic_ops;
-
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