Blackfin: fix typo in byteswap.h commit
Blackfin: fix typo in byteswap.h commit

The Blackfin port hasn't been compiling cleanly, so this typo was missed
in the byteswap unification commit.

Signed-off-by: Mike Frysinger <8f3f75c74bd5184edcfa6534cab3c13a00a2f794@gentoo.org>

joel-porquet/tsar-uclibc,joel-porquet/tsar-uclibc,joel-porquet/tsar-uclibc,joel-porquet/tsar-uclibc