From: Daniel Drake <dsd@gentoo.org>

2.6.24.3 added an unifdef entry for a header file that does not exist
in the 2.6.24 tree. Remove it.

Index: linux-2.6.24-gentoo-r3/include/linux/Kbuild
===================================================================
--- linux-2.6.24-gentoo-r3.orig/include/linux/Kbuild
+++ linux-2.6.24-gentoo-r3/include/linux/Kbuild
@@ -217,7 +217,6 @@ unifdef-y += i2o-dev.h
 unifdef-y += icmp.h
 unifdef-y += icmpv6.h
 unifdef-y += if_addr.h
-unifdef-y += if_addrlabel.h
 unifdef-y += if_arp.h
 unifdef-y += if_bridge.h
 unifdef-y += if_ec.h