Fixes two issues:
 * Add support 32 bit FS_IOC32_{GET|SET}FLAGS compat ioctls
   for (powerpc64 big endian mode)
 * Fix aarch64 compilation, missing hrtime_t and timestruc_t types

BugLink: http://bugs.launchpad.net/bugs/1564591Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>