drm/xe/pmu: Assert max gt

XE_PMU_MAX_GT needs to be used due to a circular dependency, but we
should make sure it doesn't go out of sync with XE_PMU_MAX_GT. Add a
compile check for that.

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250124050411.2189060-2-lucas.demarchi@intel.com


Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>