Add ATmega328P Xplained Mini board. The board is an official
development kit from MCHP based on the Arduino UNO, reduced
hardware, with a xplainedmini debugger and CDC ACM serial
converter.
Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>
- Decluttered Makefile by moving BOARD_INSUFFICIENT_MEMORY lists from Makefile
to Makefile.ci
- Optimized the list for use of tools:
- One entry per line reduces the number of merge conflicts
- One entry per line allows alphabetical sorting e.g. via Vim's sort command
- Sorted all lists alphabetically
