USB HID: handle multi-interface devices for Apple macbook pro properly

Some HID devices by Apple have both keyboard and mouse interfaces; the
keyboard interface is handled by usbhid, but the mouse (really
touchpad) interface must be handled by the separate 'appletouch'
driver.  Using HID_QUIRK_IGNORE will make hiddev ignore both
interfaces, therefore a new quirk flag to ignore only the mouse
interface is required.

Signed-off-by: Soeren Sonnenburg <kernel@nn7.de>
Signed-off-by: Sergey Vlasov <vsu@altlinux.ru>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/include/linux/hid.h b/include/linux/hid.h
index 829690d..93173fe 100644
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -265,6 +265,7 @@
 #define HID_QUIRK_POWERBOOK_ISO_KEYBOARD        0x00008000
 #define HID_QUIRK_BAD_RELATIVE_KEYS		0x00010000
 #define HID_QUIRK_SKIP_OUTPUT_REPORTS		0x00020000
+#define HID_QUIRK_IGNORE_MOUSE			0x00040000
 
 /*
  * This is the global environment of the parser. This information is