p11-kit: fix build without qemu-usermode

p11-kit: fix build without qemu-usermode

If qemu-usermode is not available then p11-kit fails to configure:

  meson.build:313:24: ERROR: Can not run test applications in this cross environment.

This has already been fixed upstream, so backport the patches.

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>