It is now provided at cpu level
The file always exist so no need to do '-include'. Replaced using: sed -i 's|-\(include $(RIOTCPU)/.*/Makefile.features\)|\1|' \ $(git grep -l '$(RIOTCPU)/.*/Makefile.features' boards)
The following features were tested (briefly): * UART (the first) * xtimer is working (it's the same code as in samr21)