qemu: fd: Log information about passed file descriptor

qemu: fd: Log information about passed file descriptor

Log information (type, label, etc) about FDs passed to qemu via APIs
from this module.

This does "spill" the selinux library code into this module, but
acessing it via the security driver would require passing much more
context to this module. Since it's for logging only it can be easily
removed if necessary.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>