I thought that the file mmal/mmal.h should have been downloaded when you ran the following steps
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sudo apt-get install rpi-update
sudo rpi-update e65b8c992ad0c2486e172aee1e2b1e98d623d782
although I need to check on a Pi tomorrow to confirm this. Could you try running those commands again (looking for any errors in the output) and trying to build raspberry_pi_camera_streamer again please?
Cheers
Alan