selftests/lkdtm: Fix expected text for CR4 pinning

commit c2eb472b upstream.

The error text for CR4 pinning changed. Update the test to match.

Fixes: a13b9d0b ("x86/cpu: Use pinning mask for CR4 bits needing to be 0")
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20210623203936.3151093-3-keescook@chromium.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>