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>
With #12941 and #13613 some of the blacklisting introduced in #12461
are no longer needed, since `test_interactive_test_util` is lighter
or adds no extra code.