hid-input/battery: deal with both FEATURE and INPUT report batteries

Some devices seem to report batteries as FEATUREs, others as INPUTs.

Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
diff --git a/include/linux/hid.h b/include/linux/hid.h
index fa772c8..9351d3d 100644
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -496,6 +496,7 @@
 	__s32 battery_min;
 	__s32 battery_max;
 	__s32 battery_val;
+	__s32 battery_report_type;
 	__s32 battery_report_id;
 #endif