Split WGM2 to WGM21, WGM20
Fix timer patches for ATmega8
Adds patch for the timers on attiny167
Add support for attiny13a
Use the same timer patch for atmega1280 as for atmega2560
Add support for ATmega1284p
Add support for ATtiny2313/A
all: Drop unnecessary access mode patches
Due to a change in atdf2svd [1], all these access mode patches are no
longer required - they are now translated correctly from the vendor
source file.
Drop all patches which no longer change the output (the code before and
after this change is equivalent when using the new atdf2svd).
[1]: https://github.com/Rahix/atdf2svd/commit/a189276b3540b647fab832946edf0acf39730a0e
Add attiny841 and attiny861
Add support for atmega328pb
fix: atmegaX8 TIFR should be read-write
Add support for the ATtiny84
ATtiny85 TC0 patch also applies to ATtiny84
attiny85: Timer patch fixes