This release (1.21) includes 3 patches upstreamed earlier. The 4th patch didn't make the cutoff, but has just been merged so it'll be in 1.22
This adds a patch I submitted upstream to ofono: https://lists.ofono.org/pipermail/ofono/2017-September/017557.html
* [rx-51] remove pm=0 for nokia-modem * Add ofono-1.20 + n900/isimodem fixes * [rx51] Enable ofono support