ACPICA: Global event handler

The global event handler is called whenever a general purpose
or fixed ACPI event occurs.

Also update Linux OSL to collect events counter with
global event handler.

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

include/acpi/acpixf.h

@@ -228,6 +228,10 @@ acpi_status acpi_get_parent(acpi_handle object, acpi_handle * out_handle);
 acpi_status
 acpi_install_initialization_handler(acpi_init_handler handler, u32 function);
 
+acpi_status
+acpi_install_global_event_handler(ACPI_GBL_EVENT_HANDLER handler,
+				 void *context);
+
 acpi_status
 acpi_install_fixed_event_handler(u32 acpi_event,
 				 acpi_event_handler handler, void *context);

include/acpi/actypes.h

@@ -895,6 +895,14 @@ typedef void
 /*
  * Various handlers and callback procedures
  */
+typedef
+void (*ACPI_GBL_EVENT_HANDLER) (u32 event_type,
+			       acpi_handle device,
+			       u32 event_number, void *context);
+
+#define ACPI_EVENT_TYPE_GPE         0
+#define ACPI_EVENT_TYPE_FIXED       1
+
 typedef u32(*acpi_event_handler) (void *context);
 
 typedef