m8: Create firmware links at build time

Change-Id: I47522ae46309c1037d9c54c57528f908e33a646a
m8: Clean up NFC permissions

Change-Id: I60ff9c3a5778fd22bd97278198a3e1d01a6a69cc
m8: Remove duplicate /persist entries

Change-Id: I01255720d0f506862bb88c990db1e48de5c0c396