Someone would need to write the app for it. Not sure if you can get the old Crysis 1 profile for the G-15 keyboard to work or not. Would really depend on how Crysis 2 sends the information, and whether it's the same as in 1.
To be honest, the original was fairly redundant, as all of the information was readily available on screen, and didn't require you look away to find it. However, there are things in Crysis 2 that would be useful, such as current nano count, and how many of the souvenirs, keys, etc.. you have so far for a given level.