KUnit - Enable /sys/kernel/debug/kunit debugfs representation

configname: CONFIG_KUNIT_DEBUGFS

Linux Kernel Configuration
└─>Kernel hacking
└─>Kernel Testing and Coverage
└─>KUnit - Enable support for unit tests
└─>KUnit - Enable /sys/kernel/debug/kunit debugfs representation
In linux kernel since version 5.1 (release Date: 2019-05-05)  
Enable debugfs representation for kunit. Currently this consists
of /sys/kernel/debug/kunit/<test_suite>/results files for each
test suite, which allow users to see results of the last test suite
run that occurred.

depends
CONFIG_KUNIT