sony-laptop: Add support for extra keyboard events

The current sony-laptop code assumes that the keyboard event method is
always located at slot 2 in the platform code. Remove this assumption and
add support for some additional hotkeys.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/include/linux/sonypi.h b/include/linux/sonypi.h
index f41ffd7..8458dbe 100644
--- a/include/linux/sonypi.h
+++ b/include/linux/sonypi.h
@@ -103,6 +103,7 @@
 #define SONYPI_EVENT_WIRELESS_OFF		61
 #define SONYPI_EVENT_ZOOM_IN_PRESSED		62
 #define SONYPI_EVENT_ZOOM_OUT_PRESSED		63
+#define SONYPI_EVENT_CD_EJECT_PRESSED		64
 
 /* get/set brightness */
 #define SONYPI_IOCGBRT		_IOR('v', 0, __u8)