drm/xe/kunit: Enable CONFIG_PCI_IOV in .kunitconfig

We will add kunit tests for the PF specific code that is by default
enabled only under CONFIG_PCI_IOV. Update our .kunitconfig to allow
running those test cases by our CI.
Reviewed-by: Michał Winiarski <michal.winiarski@intel.com>
Link: https://lore.kernel.org/r/20231128151507.1015-5-michal.wajdeczko@intel.comSigned-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

drivers/gpu/drm/xe/.kunitconfig

 # xe dependencies
 CONFIG_KUNIT=y
 CONFIG_PCI=y
+CONFIG_PCI_IOV=y
 CONFIG_DEBUG_FS=y
 CONFIG_DRM=y
 CONFIG_DRM_FBDEV_EMULATION=y