Add support for dynamically specified frame rate.

This adds a new --frame-interval option to specify the frame rate
in milliseconds per frame.

BUG=chromium-os:21214
TEST=for T in 5 10 50 100 1000; do time ./ply-image --frame-interval $T /usr/share/chromeos-assets/images/boot_splash*; done

Change-Id: I95b3a9012f55fedcab713f315e686e3a8daf259a
Reviewed-on: http://gerrit.chromium.org/gerrit/9804
Tested-by: Richard Barnette <jrbarnette@chromium.org>
Commit-Ready: Richard Barnette <jrbarnette@chromium.org>
Reviewed-by: Luigi Semenzato <semenzato@chromium.org>
1 file changed