I also used mac80211 patch from http://heffer.fedorapeople.org/openwrt/ … 5350.patch
Can you test with this patch (http://pastebin.com/hc8NxHbL) and r34270 and see if wireless works for you?
I got wireless working in that revision and with that patch. Newer revision upgraded compat-wireless package and the patch didn't work anymore.
The only difference in our working boards is the flash and the ram. I checked your pcb layout (MPR-L8) with mine (a1 v1.4 so it seems) and they are the same.