HID: map macbook keys for "Expose" and "Dashboard"

On macbooks there are specific keys for the user-space functions Expose
and Dashboard, which currently has no counterpart in input.h. This patch
adds KEY_SCALE and KEY_DASHBOARD, and maps the keyboard accordingly.

Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/include/linux/input.h b/include/linux/input.h
index b86fb55..5341e82 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -238,6 +238,7 @@
 #define KEY_KPEQUAL		117
 #define KEY_KPPLUSMINUS		118
 #define KEY_PAUSE		119
+#define KEY_SCALE		120	/* AL Compiz Scale (Expose) */
 
 #define KEY_KPCOMMA		121
 #define KEY_HANGEUL		122
@@ -322,6 +323,7 @@
 #define KEY_PAUSECD		201
 #define KEY_PROG3		202
 #define KEY_PROG4		203
+#define KEY_DASHBOARD		204	/* AL Dashboard */
 #define KEY_SUSPEND		205
 #define KEY_CLOSE		206	/* AC Close */
 #define KEY_PLAY		207