drm/xe/compat: convert uncore macro to static inlines

drm/xe/compat: convert uncore macro to static inlines

Use static inline instead of macro for
intel_uncore_arm_unclaimed_mmio_detection() to avoid the need for
__maybe_unused annotations.

v2: Rebase, intel_uncore_arm_unclaimed_mmio_detection()

Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> # v1
Reviewed-by: Michał Grzelak <michal.grzelak@intel.com>
Link: https://patch.msgid.link/7ddee71952315e70e4a7df23638100b664e293bd.1766406794.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>