Add Kbuild file for Alpha 'make headers_install'

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
diff --git a/include/asm-alpha/Kbuild b/include/asm-alpha/Kbuild
new file mode 100644
index 0000000..e57fd57
--- /dev/null
+++ b/include/asm-alpha/Kbuild
@@ -0,0 +1,5 @@
+include include/asm-generic/Kbuild.asm
+
+unifdef-y += console.h fpu.h sysinfo.h
+
+header-y += gentrap.h regdef.h pal.h reg.h