[IA64] fix __apci_unmap_table

Impact: fix build error

to fix:

  tip/arch/ia64/kernel/acpi.c:203: error: conflicting types for '__acpi_unmap_table'
  tip/include/linux/acpi.h:82: error: previous declaration of '__acpi_unmap_table' was here
  tip/arch/ia64/kernel/acpi.c:203: error: conflicting types for '__acpi_unmap_table'
  tip/include/linux/acpi.h:82: error: previous declaration of '__acpi_unmap_table' was here
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/ia64/kernel/acpi.c

@@ -199,7 +199,7 @@ char *__init __acpi_map_table(unsigned long phys_addr, unsigned long size)
 	return __va(phys_addr);
 }
 
-char *__init __acpi_unmap_table(unsigned long virt_addr, unsigned long size)
+void __init __acpi_unmap_table(char *map, unsigned long size)
 {
 }
 

include/linux/acpi.h

@@ -79,7 +79,7 @@ typedef int (*acpi_table_handler) (struct acpi_table_header *table);
 typedef int (*acpi_table_entry_handler) (struct acpi_subtable_header *header, const unsigned long end);
 
 char * __acpi_map_table (unsigned long phys_addr, unsigned long size);
-void __init __acpi_unmap_table(char *map, unsigned long size);
+void __acpi_unmap_table(char *map, unsigned long size);
 int early_acpi_boot_init(void);
 int acpi_boot_init (void);
 int acpi_boot_table_init (void);