Nah. Amazon has added video game achievements to their Kindle app for iOS (and, presumably, Android, too) and it tracks a fair number of things... but it seems like such a banal thing to me.

I value more how many pages I can get through than how many hours I spend -- and perhaps more importantly, what stays with me after I'm done, as time erodes my memories of the fine details. God knows there are plenty of books out there I've invested far, far too many minutes of my life into that I'd forgotten entirely the subsequent week.