qemu: Bump the memory locking limit for mdevs as well

Since mdevs are just another type of VFIO devices, we should increase
the memory locking limit the same way we do for VFIO PCI devices.
Signed-off-by: NErik Skultety <eskultet@redhat.com>

src/qemu/qemu_domain.c

@@ -6350,11 +6350,12 @@ qemuDomainRequiresMemLock(virDomainDefPtr def)
         return true;
 
     for (i = 0; i < def->nhostdevs; i++) {
-        virDomainHostdevDefPtr dev = def->hostdevs[i];
+        virDomainHostdevSubsysPtr subsys = &def->hostdevs[i]->source.subsys;
 
-        if (dev->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS &&
-            dev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI &&
-            dev->source.subsys.u.pci.backend == VIR_DOMAIN_HOSTDEV_PCI_BACKEND_VFIO)
+        if (def->hostdevs[i]->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS &&
+            (subsys->type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_MDEV ||
+             (subsys->type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI &&
+              subsys->u.pci.backend == VIR_DOMAIN_HOSTDEV_PCI_BACKEND_VFIO)))
             return true;
     }