build: allow board config header to specify bootstage 2 without using custom per board cmake#293

Merged

kilograham merged 2 commits intodevelop-1.1.1from

Apr 1, 2021

Commits on Mar 31, 2021

build: allow compile time - and hence via board config header - choice of boot stage2 via a default compile_time_choice.S boot stage 2 which conditionally includes others
kilograham
committed

Commits on Apr 1, 2021

fixup GENERIC_03H #define names
kilograham
committed