x86: unstatic mp_find_ioapic so it can be used elsewhere

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>

arch/x86/include/asm/mpspec.h

@@ -77,6 +77,7 @@ extern int acpi_probe_gsi(void);
 #ifdef CONFIG_X86_IO_APIC
 extern int mp_config_acpi_gsi(unsigned char number, unsigned int devfn, u8 pin,
 				u32 gsi, int triggering, int polarity);
+extern int mp_find_ioapic(int gsi);
 #else
 static inline int
 mp_config_acpi_gsi(unsigned char number, unsigned int devfn, u8 pin,

arch/x86/kernel/acpi/boot.c

@@ -872,7 +872,7 @@ static struct {
 	DECLARE_BITMAP(pin_programmed, MP_MAX_IOAPIC_PIN + 1);
 } mp_ioapic_routing[MAX_IO_APICS];
 
-static int mp_find_ioapic(int gsi)
+int mp_find_ioapic(int gsi)
 {
 	int i = 0;