[PATCH] MSI build fixes

Add missing NR_VECTORS definition to visws and pc9800.  Also, make MSI
support dependent on CONFIG_X86_IO_APIC, as it won't build without IOAPIC
support.

arch/i386/Kconfig

@@ -1056,7 +1056,7 @@ config PCI_DIRECT
 
 config PCI_USE_VECTOR
 	bool "Vector-based interrupt indexing"
-	depends on X86_LOCAL_APIC
+	depends on X86_LOCAL_APIC && X86_IO_APIC
 	default n
 	help
 	   This replaces the current existing IRQ-based index interrupt scheme

include/asm-i386/mach-pc9800/irq_vectors.h

@@ -85,6 +85,7 @@
 #define NR_IRQS 16
 #endif
 
+#define NR_VECTORS 256
 #define NR_IRQ_VECTORS NR_IRQS
 
 #define FPU_IRQ			8

include/asm-i386/mach-visws/irq_vectors.h

@@ -47,8 +47,9 @@
 #define TIMER_IRQ 0
 
 /*
- * 
+ * IRQ definitions
  */
+#define NR_VECTORS 256
 #define NR_IRQS 224
 #define NR_IRQ_VECTORS NR_IRQS