ACPI: create /sys/firmware/acpi/interrupts

See Documentation/ABI/testing/sysfs-firmware-acpi

Based-on-original-patch-by: Luming Yu <luming.yu@intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/events/evevent.c b/drivers/acpi/events/evevent.c
index e412878..3048801 100644
--- a/drivers/acpi/events/evevent.c
+++ b/drivers/acpi/events/evevent.c
@@ -259,7 +259,7 @@
 			enable_bit_mask)) {
 
 			/* Found an active (signalled) event */
-
+			acpi_os_fixed_event_count(i);
 			int_status |= acpi_ev_fixed_event_dispatch((u32) i);
 		}
 	}