Generate doc root doxygenlayout file, as well as devices stuff, based on main
Makefile $(TARGETS) and template files. Avoids painfull sync/merge of 20 files+
when adding a new device.
bonus : allow to build only one device doc easily (make TARGETS=stm32f0 doc)
regression: we currently loose device "fancy" naming as device name is
guessed (toUpper()..) from folder name.
Remove tex header templates only used in latex document generation.
Clarify the HACKING document to reflect no pdf/latex
Fixes: 9443856b doc: drop latex support
Just the basic core common functionality gained for free by being a common
peripheral. Enough for a miniblink.
Fixes some errors in the GPIO memory map. ST's naming of AHB2 vs AHB3 is
confusing.
Don't include any of the common files yet, we're only getting a stub framework
up for further work.
This is mostly noise adding links from the other families to make the l4
"exist"