drm/xe/pf: Remove inlined #ifdef CONFIG_PCI_IOV

We can remove #ifdef CONFIG_PCI_IOV in .c files if we provide
dummy replacement of the xe_pci_sriov_configure() function.

Suggested-by: Jani Nikula <jani.nikula@linux.intel.com>
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Francois Dugast <francois.dugast@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240627104305.1477-1-michal.wajdeczko@intel.com