ACPICA: Add acpi_gpe_count global to track the number of GPE events

Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/events/evgpe.c b/drivers/acpi/events/evgpe.c
index 1f98818..d9f71dd 100644
--- a/drivers/acpi/events/evgpe.c
+++ b/drivers/acpi/events/evgpe.c
@@ -618,6 +618,8 @@
 
 	ACPI_FUNCTION_TRACE(ev_gpe_dispatch);
 
+	acpi_gpe_count++;
+
 	/*
 	 * If edge-triggered, clear the GPE status bit now.  Note that
 	 * level-triggered events are cleared after the GPE is serviced.