qemu: tpm: Pass --logfile to swtpm_setup for incoming migration

Good to have for debugging in case something wrong happens during
incoming migration.

Signed-off-by: Eiichi Tsukata <eiichi.tsukata@nutanix.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>

src/qemu/qemu_tpm.c

@@ -427,6 +427,7 @@ qemuTPMEmulatorRunSetup(const char *storagepath,
     } else {
         virCommandAddArgList(cmd,
                              "--tpm-state", storagepath,
+                             "--logfile", logfile,
                              "--overwrite",
                              NULL);
     }