drm/xe/guc: Add VF_STATE_NOTIFY and VF_CONTROL to ABI

In upcoming patches the PF driver will add support to handle the
GUC2PF_VF_STATE_NOTIFY events and to send PF2GUC_VF_CONTROL request
messages.  Add necessary definitions to our GuC firmware ABI header.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240326191518.363-2-michal.wajdeczko@intel.com