sh: Fix posix_types.h userspace breakage from sh64 merge.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/include/asm-sh/Kbuild b/include/asm-sh/Kbuild
index 76a8ccf..43910cd 100644
--- a/include/asm-sh/Kbuild
+++ b/include/asm-sh/Kbuild
@@ -1,3 +1,8 @@
 include include/asm-generic/Kbuild.asm
 
 header-y += cpu-features.h
+
+unifdef-y += unistd_32.h
+unifdef-y += unistd_64.h
+unifdef-y += posix_types_32.h
+unifdef-y += posix_types_64.h