hw/vfio/pci.c: Make some structure static

Not used outside C module.

Signed-off-by: Frediano Ziglio <frediano.ziglio@cloud.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by Tokarev <mjt@tls.msk.ru>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index 4fa387f..a1522a0 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -2558,7 +2558,7 @@
         (vdev->ramfb_migrate == ON_OFF_AUTO_AUTO && vdev->enable_ramfb);
 }
 
-const VMStateDescription vmstate_vfio_display = {
+static const VMStateDescription vmstate_vfio_display = {
     .name = "VFIOPCIDevice/VFIODisplay",
     .version_id = 1,
     .minimum_version_id = 1,
@@ -2570,7 +2570,7 @@
     }
 };
 
-const VMStateDescription vmstate_vfio_pci_config = {
+static const VMStateDescription vmstate_vfio_pci_config = {
     .name = "VFIOPCIDevice",
     .version_id = 1,
     .minimum_version_id = 1,