drm/xe/pf: Skip VRAM auto-provisioning if already provisioned

drm/xe/pf: Skip VRAM auto-provisioning if already provisioned

In case VF's VRAM provisioning using sysfs is done by the admin
prior to VFs enabling, this provisioning will be lost as PF will
run VRAM auto-provisioning anyway. To avoid that skip this auto-
provisioning if any VF has been already provisioned with VRAM.

To help admin find any mistakes, add diagnostics messages about
which VFs were provisioned with VRAM and which were missed.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Link: https://patch.msgid.link/20260218205553.3561-10-michal.wajdeczko@intel.com