[ACPI] merge acpi-2.6.12 branch into latest Linux 2.6.13-rc...

Signed-off-by: Len Brown <len.brown@intel.com>

include/acpi/acpi_drivers.h

@@ -109,5 +109,10 @@ int acpi_ec_ecdt_probe (void);
 
 int acpi_processor_set_thermal_limit(acpi_handle handle, int type);
 
+/* --------------------------------------------------------------------------
+                                    Hot Keys
+   -------------------------------------------------------------------------- */
+
+extern int acpi_specific_hotkey_enabled;
 
 #endif /*__ACPI_DRIVERS_H__*/