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"
Karl Palsson
Sebastian Holzapfel