[PATCH] Fix brightness down on Dell D420

[Bastien Nocera]

Pretty obvious patch.

diff --git a/fdi/information/10freedesktop/30-keymap-dell.fdi b/fdi/information/10freedesktop/30-keymap-dell.fdi
index e9779a8..4a6797a 100644
--- a/fdi/information/10freedesktop/30-keymap-dell.fdi
+++ b/fdi/information/10freedesktop/30-keymap-dell.fdi
@@ -10,7 +10,7 @@
         <match key="/org/freedesktop/Hal/devices/computer:system.hardware.product" prefix="Latitude">
           <match key="/org/freedesktop/Hal/devices/computer:system.hardware.product" contains="D420">
             <append key="input.keymap.data" type="strlist">e005:brightnessdown</append> <!-- Fn+Down arrow Brightness Down -->
-            <append key="input.keymap.data" type="strlist">e005:f23</append> <!-- FIXME Fn+Left arrow Auto Brightness -->
+            <append key="input.keymap.data" type="strlist">e013:f23</append> <!-- FIXME Fn+Left arrow Auto Brightness -->
             <append key="input.keymap.data" type="strlist">e006:brightnessup</append> <!-- Fn+Up arrow Brightness Up -->
             <append key="input.keymap.data" type="strlist">e007:battery</append> <!-- Fn+F3 battery icon -->
             <append key="input.keymap.data" type="strlist">e00a:suspend</append> <!-- Fn+F1 hibernate -->