kasan: fix and update KUNIT_EXPECT_KASAN_FAIL comment

kasan: fix and update KUNIT_EXPECT_KASAN_FAIL comment

Update the comment for KUNIT_EXPECT_KASAN_FAIL to describe the parameters
this macro accepts.

Also drop the mention of the "kasan_status" KUnit resource, as it no
longer exists.

Link: https://lkml.kernel.org/r/6fad6661e72c407450ae4b385c71bc4a7e1579cd.1696605143.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202308171757.7V5YUcje-lkp@intel.com/
Reviewed-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>