buildroot/toolchain/kernel-headers/linux-2.6.21.5-001-add-linkage-header.patch

diff -ur linux-2.6.21.5/include/asm-arm/Kbuild linux-2.6.21.5-patched/include/asm-arm/Kbuild
--- linux-2.6.21.5/include/asm-arm/Kbuild	2007-06-11 13:37:06.000000000 -0500
+++ linux-2.6.21.5-patched/include/asm-arm/Kbuild	2008-02-27 18:17:46.999128276 -0600
@@ -1 +1,3 @@
 include include/asm-generic/Kbuild.asm
+
+header-y += linkage.h
diff -ur linux-2.6.21.5/include/linux/Kbuild linux-2.6.21.5-patched/include/linux/Kbuild
--- linux-2.6.21.5/include/linux/Kbuild	2007-06-11 13:37:06.000000000 -0500
+++ linux-2.6.21.5-patched/include/linux/Kbuild	2008-02-27 18:15:05.921149678 -0600
@@ -100,6 +100,7 @@
 header-y += jffs2.h
 header-y += keyctl.h
 header-y += limits.h
+header-y += linkage.h
 header-y += lock_dlm_plock.h
 header-y += magic.h
 header-y += major.h