firmware-samsung-m0: fix wifi on mainline, and add bt fw

With this wifi seem to work reliably, and it is possibly to for example connect to a bluetooth speaker and play music.

For wifi, issue seem to be with the nvram_net.txt file, changing only that one to a newer one makes wifi work. Here, both the .txt and .bin file are updated, as the old files are from 2012, while the new ones have a datestamp from 2019.