dell-wmi: new driver for hotkey control

Add a WMI driver for Dell laptops. Currently it does nothing but send a
generic input event when a button with a picture of a battery on it is
pressed, but maybe other uses will appear over time.

Signed-off-by: Matthew Garrett <[email protected]>
Cc: Dmitry Torokhov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Len Brown <[email protected]>
diff --git a/MAINTAINERS b/MAINTAINERS
index 5d460c9..4ee5964 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1393,6 +1393,11 @@
 M:	[email protected]
 S:	Maintained
 
+DELL WMI EXTRAS DRIVER
+P:	Matthew Garrett
+M:	[email protected]
+S:	Maintained
+
 DEVICE NUMBER REGISTRY
 P:	Torben Mathiasen
 M:	[email protected]