configure: also check for byteswap.h

include/f2fs_fs.h checks the HAVE_BYTESWAP_H conditional, but it is
never checked for in configure.

Add that header to the list of headers checked for.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
1 file changed