asm-blackfin/unaligned.h: add for zlib code

The new zlib code wants asm/unaligned.h, so have the Blackfin version pull
in the asm-generic/unaligned.h.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

include/asm-blackfin/unaligned.h

@@ -0,0 +1 @@
+#include <asm-generic/unaligned.h>