drm/xe/rplu: s/ADLP/ALDERLAKE_P

drm/xe/rplu: s/ADLP/ALDERLAKE_P

i915 now uses full names for platforms. So we now have
ALDERLAKE instead of ADL. Extend this to xe driver as well.
This will make it easier for macro magic usages.

v2: Do not make changes to compat-i915-headers/i915_drv.h
file with the rest of the changes (Jani)

Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Dnyaneshwar Bhadane <dnyaneshwar.bhadane@intel.com>
Signed-off-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20231005205450.3177354-3-anusha.srivatsa@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>