format hardening (fixes FTBTS with "-Werror=format-security")

    Driver/enhanceio/eio_conf.c: In function ‘eio_create_thread’:
    Driver/enhanceio/eio_conf.c:120:19: error: format not a string literal and no format arguments [-Werror=format-security]
Merge pull request #18 from onlyjob/format-hardening

format hardening (fixes FTBTS with "-Werror=format-security")
Signed Of By:Dmitry Smirnov