add debugfs support for displaying kunit test suite results; this is
especially useful for module-loaded tests to allow disentangling of
test result display from other dmesg events. debugfs support is
provided if CONFIG_KUNIT_DEBUGFS=y.
As well as printk()ing messages, we append them to a per-test log.
Signed-off-by: Alan Maguire <firstname.lastname@example.org>
Reviewed-by: Brendan Higgins <email@example.com>
Reviewed-by: Frank Rowand <firstname.lastname@example.org>
Signed-off-by: Shuah Khan <email@example.com>