package/mjpg-streamer: bump version

package/mjpg-streamer: bump version

This bump includes
https://github.com/jacksonliam/mjpg-streamer/commit/2b751f1f2ab1dfaf1d12bedf98d4fe37a42d3edd

which fixes
http://autobuild.buildroot.net/results/247/247a55398aed37a08c67cc21db6836ad342d24ca/

and includes
https://github.com/jacksonliam/mjpg-streamer/commit/ddb69b7b4f114f3c2ca01adf55712792ca8aed43

which fixes
http://autobuild.buildroot.net/results/dad/dad054954de76cab56333747274520f269be2066/

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>