linux-phytec-fsl

lkdtm: add "SPINLOCKUP" trigger

For additional lockup testing, add "SPINLOCKUP" to trigger a spinlock
deadlock when triggered twice.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>