openrisc: Add architecture header files

Signed-off-by: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
diff --git a/arch/openrisc/include/asm/unaligned.h b/arch/openrisc/include/asm/unaligned.h
new file mode 100644
index 0000000..6cecbbb
--- /dev/null
+++ b/arch/openrisc/include/asm/unaligned.h
@@ -0,0 +1 @@
+#include <asm-generic/unaligned.h>