ACPICA: Fix for invalid large array index on 64-bit systems

This problem was introduced in 20080514 as a result of the
elimination of the acpi_native_uint type. Code uses a negative
array index, which should be eliminated.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
diff --git a/drivers/acpi/executer/exdump.c b/drivers/acpi/executer/exdump.c
index c94638d..f337c3f 100644
--- a/drivers/acpi/executer/exdump.c
+++ b/drivers/acpi/executer/exdump.c
@@ -776,7 +776,7 @@
 		      const char *note,
 		      const char *module_name, u32 line_number)
 {
-	u32 i;
+	s32 i;
 
 	ACPI_FUNCTION_NAME(ex_dump_operands);