HID: proper handling of MS 4k and 6k devices

This removes ugly macros IS_* to distinguish devices that
need special handling in hid-input, and establish proper
quirks for them.

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/include/linux/hid.h b/include/linux/hid.h
index 33ec333..24f04cd 100644
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -283,6 +283,7 @@
 #define HID_QUIRK_IGNORE_HIDINPUT		0x01000000
 #define HID_QUIRK_2WHEEL_MOUSE_HACK_B8		0x02000000
 #define HID_QUIRK_HWHEEL_WHEEL_INVERT		0x04000000
+#define HID_QUIRK_MICROSOFT_KEYS		0x08000000
 
 /*
  * Separate quirks for runtime report descriptor fixup